content/renderer/pepper/pepper_plugin_instance

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This source file includes following definitions.
DrawEmptyRectangle
SecurityOriginForInstance
StringVectorToArgArray
IsReservedSystemInputEvent
OnLockMouseACK
OnMouseLockLost
HandleMouseLockedInputEvent
Create
ReplayReceivedData
didReceiveData
didFinishLoading
didFail
AsPPB_Gamepad_API
Sample
weak_factory_
Delete
is_deleted
Paint
InvalidateRect
ScrollRect
CommitBackingTexture
InstanceCrashed
SetGPUHistogram
Initialize
HandleDocumentLoad
SendCompositionEventToPlugin
SendCompositionEventWithUnderlineInformationToPlugin
RequestInputEventsHelper
HandleCompositionStart
HandleCompositionUpdate
HandleCompositionEnd
HandleTextInput
GetSurroundingText
IsPluginAcceptingCompositionEvents
GetCaretBounds
HandleInputEvent
HandleMessage
GetInstanceObject
ViewChanged
SetWebKitFocus
SetContentAreaFocus
PageVisibilityChanged
ViewInitiatedPaint
ViewFlushedPaint
GetBitmapForOptimizedPluginPaint
SetSelectedText
SetLinkUnderCursor
GetSelectedText
GetLinkAtPosition
RequestSurroundingText
Zoom
StartFind
SelectFindResult
StopFind
LoadFindInterface
LoadInputEventInterface
LoadMessagingInterface
LoadMouseLockInterface
LoadPdfInterface
LoadPrintInterface
LoadPrivateInterface
LoadSelectionInterface
LoadTextInputInterface
LoadZoomInterface
UpdateLayerTransform
PluginHasFocus
SendFocusChangeNotification
UpdateTouchEventRequest
IsAcceptingWheelEvents
ScheduleAsyncDidChangeView
SendAsyncDidChangeView
SendDidChangeView
ReportGeometry
GetPreferredPrintOutputFormat
SupportsPrintInterface
IsPrintScalingDisabled
PrintBegin
PrintPage
PrintPageHelper
PrintEnd
CanRotateView
RotateView
FlashIsFullscreenOrPending
IsFullscreenOrPending
SetFullscreen
UpdateFlashFullscreenState
IsViewAccelerated
PrintPDFOutput
UpdateLayer
PrepareTexture
PrepareTextureMailbox
OnDestruct
AddPluginObject
RemovePluginObject
IsProcessingUserGesture
CurrentUserGestureToken
OnLockMouseACK
OnMouseLockLost
HandleMouseLockedInputEvent
SimulateInputEvent
SimulateIMEEvent
SimulateImeSetCompositionEvent
GetContentDecryptorDelegate
BindGraphics
IsFullFrame
GetViewData
FlashIsFullscreen
GetWindowObject
GetOwnerElementObject
ExecuteScript
GetAudioHardwareOutputSampleRate
GetAudioHardwareOutputBufferSize
GetDefaultCharSet
SessionCreated
SessionMessage
SessionReady
SessionClosed
SessionError
DeliverBlock
DecoderInitializeDone
DecoderDeinitializeDone
DecoderResetDone
DeliverFrame
DeliverSamples
SetPluginToHandleFindRequests
NumberOfFindResultsChanged
SelectedFindResultChanged
SetTickmarks
IsFullscreen
SetFullscreen
GetScreenSize
GetSingletonResource
RequestInputEvents
RequestFilteringInputEvents
ClearInputEventRequest
ZoomChanged
ZoomLimitsChanged
PostMessage
SetCursor
LockMouse
UnlockMouse
SetTextInputType
UpdateCaretPosition
CancelCompositionText
SelectionChanged
UpdateSurroundingText
ResolveRelativeToDocument
DocumentCanRequest
DocumentCanAccessDocument
GetDocumentURL
GetPluginInstanceURL
GetPluginReferrerURL
ResetAsProxied
IsValidInstanceOf
instanceNPP
Get
GetRenderView
GetContainer
GetIsolate
GetVarTracker
GetPluginURL
GetModulePath
CreateImage
SwitchToOutOfProcessProxy
SetAlwaysOnTop
DoSetCursor
IsFullPagePlugin
FlashSetFullscreen
IsRectTopmost
Navigate
MakePendingFileRefRendererHost
SetEmbedProperty
CanAccessMainFrame
KeepSizeAttributesBeforeFullscreen
SetSizeAttributesForFullscreen
ResetSizeAttributesAfterFullscreen
IsMouseLocked
LockMouse
GetOrCreateLockTargetAdapter
GetMouseLockDispatcher
UnSetAndDeleteLockTargetAdapter
DidDataFromWebURLResponse
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/renderer/pepper/pepper_plugin_instance_impl.h"

#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/debug/trace_event.h"
#include "base/logging.h"
#include "base/memory/linked_ptr.h"
#include "base/message_loop/message_loop.h"
#include "base/stl_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_offset_string_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "cc/layers/texture_layer.h"
#include "content/common/content_constants_internal.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/page_zoom.h"
#include "content/public/renderer/content_renderer_client.h"
#include "content/renderer/pepper/common.h"
#include "content/renderer/pepper/content_decryptor_delegate.h"
#include "content/renderer/pepper/event_conversion.h"
#include "content/renderer/pepper/fullscreen_container.h"
#include "content/renderer/pepper/gfx_conversion.h"
#include "content/renderer/pepper/host_dispatcher_wrapper.h"
#include "content/renderer/pepper/host_globals.h"
#include "content/renderer/pepper/message_channel.h"
#include "content/renderer/pepper/npapi_glue.h"
#include "content/renderer/pepper/pepper_browser_connection.h"
#include "content/renderer/pepper/pepper_file_ref_renderer_host.h"
#include "content/renderer/pepper/pepper_graphics_2d_host.h"
#include "content/renderer/pepper/pepper_in_process_router.h"
#include "content/renderer/pepper/pepper_platform_context_3d.h"
#include "content/renderer/pepper/pepper_url_loader_host.h"
#include "content/renderer/pepper/plugin_module.h"
#include "content/renderer/pepper/plugin_object.h"
#include "content/renderer/pepper/ppb_buffer_impl.h"
#include "content/renderer/pepper/ppb_graphics_3d_impl.h"
#include "content/renderer/pepper/ppb_image_data_impl.h"
#include "content/renderer/pepper/renderer_ppapi_host_impl.h"
#include "content/renderer/pepper/url_request_info_util.h"
#include "content/renderer/pepper/url_response_info_util.h"
#include "content/renderer/render_frame_impl.h"
#include "content/renderer/render_thread_impl.h"
#include "content/renderer/render_view_impl.h"
#include "content/renderer/render_widget.h"
#include "content/renderer/render_widget_fullscreen_pepper.h"
#include "content/renderer/sad_plugin.h"
#include "media/base/audio_hardware_config.h"
#include "ppapi/c/dev/ppb_zoom_dev.h"
#include "ppapi/c/dev/ppp_selection_dev.h"
#include "ppapi/c/dev/ppp_text_input_dev.h"
#include "ppapi/c/dev/ppp_zoom_dev.h"
#include "ppapi/c/pp_rect.h"
#include "ppapi/c/ppb_audio_config.h"
#include "ppapi/c/ppb_core.h"
#include "ppapi/c/ppb_gamepad.h"
#include "ppapi/c/ppp_input_event.h"
#include "ppapi/c/ppp_instance.h"
#include "ppapi/c/ppp_messaging.h"
#include "ppapi/c/ppp_mouse_lock.h"
#include "ppapi/c/private/ppb_find_private.h"
#include "ppapi/c/private/ppp_find_private.h"
#include "ppapi/c/private/ppp_instance_private.h"
#include "ppapi/c/private/ppp_pdf.h"
#include "ppapi/host/ppapi_host.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/uma_private_resource.h"
#include "ppapi/proxy/url_loader_resource.h"
#include "ppapi/shared_impl/ppapi_permissions.h"
#include "ppapi/shared_impl/ppapi_preferences.h"
#include "ppapi/shared_impl/ppb_gamepad_shared.h"
#include "ppapi/shared_impl/ppb_input_event_shared.h"
#include "ppapi/shared_impl/ppb_url_util_shared.h"
#include "ppapi/shared_impl/ppb_view_shared.h"
#include "ppapi/shared_impl/ppp_instance_combined.h"
#include "ppapi/shared_impl/resource.h"
#include "ppapi/shared_impl/scoped_pp_resource.h"
#include "ppapi/shared_impl/time_conversion.h"
#include "ppapi/shared_impl/url_request_info_data.h"
#include "ppapi/shared_impl/var.h"
#include "ppapi/thunk/enter.h"
#include "ppapi/thunk/ppb_buffer_api.h"
#include "printing/metafile.h"
#include "printing/metafile_skia_wrapper.h"
#include "printing/units.h"
#include "skia/ext/platform_canvas.h"
#include "skia/ext/platform_device.h"
#include "third_party/WebKit/public/platform/WebCursorInfo.h"
#include "third_party/WebKit/public/platform/WebGamepads.h"
#include "third_party/WebKit/public/platform/WebRect.h"
#include "third_party/WebKit/public/platform/WebString.h"
#include "third_party/WebKit/public/platform/WebURL.h"
#include "third_party/WebKit/public/platform/WebURLError.h"
#include "third_party/WebKit/public/platform/WebURLRequest.h"
#include "third_party/WebKit/public/web/WebBindings.h"
#include "third_party/WebKit/public/web/WebCompositionUnderline.h"
#include "third_party/WebKit/public/web/WebDataSource.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebElement.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebInputEvent.h"
#include "third_party/WebKit/public/web/WebPluginContainer.h"
#include "third_party/WebKit/public/web/WebPrintParams.h"
#include "third_party/WebKit/public/web/WebPrintScalingOption.h"
#include "third_party/WebKit/public/web/WebScopedUserGesture.h"
#include "third_party/WebKit/public/web/WebSecurityOrigin.h"
#include "third_party/WebKit/public/web/WebUserGestureIndicator.h"
#include "third_party/WebKit/public/web/WebView.h"
#include "third_party/khronos/GLES2/gl2.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkRect.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/image/image_skia_rep.h"
#include "ui/gfx/range/range.h"
#include "ui/gfx/rect_conversions.h"
#include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
#include "v8/include/v8.h"
#include "webkit/renderer/compositor_bindings/web_layer_impl.h"

#if defined(OS_CHROMEOS)
#include "ui/events/keycodes/keyboard_codes_posix.h"
#endif

#if defined(OS_MACOSX)
#include "printing/metafile_impl.h"
#endif  // defined(OS_MACOSX)

#if defined(OS_WIN)
#include "base/metrics/histogram.h"
#include "base/win/windows_version.h"
#include "skia/ext/platform_canvas.h"
#include "ui/gfx/codec/jpeg_codec.h"
#include "ui/gfx/gdi_util.h"
#endif

using base::StringPrintf;
using ppapi::InputEventData;
using ppapi::PpapiGlobals;
using ppapi::PPB_InputEvent_Shared;
using ppapi::PPB_View_Shared;
using ppapi::PPP_Instance_Combined;
using ppapi::Resource;
using ppapi::ScopedPPResource;
using ppapi::StringVar;
using ppapi::TrackedCallback;
using ppapi::thunk::EnterResourceNoLock;
using ppapi::thunk::PPB_Buffer_API;
using ppapi::thunk::PPB_Gamepad_API;
using ppapi::thunk::PPB_Graphics2D_API;
using ppapi::thunk::PPB_Graphics3D_API;
using ppapi::thunk::PPB_ImageData_API;
using ppapi::Var;
using ppapi::ArrayBufferVar;
using ppapi::ViewData;
using blink::WebBindings;
using blink::WebCanvas;
using blink::WebCursorInfo;
using blink::WebDocument;
using blink::WebElement;
using blink::WebFrame;
using blink::WebInputEvent;
using blink::WebPlugin;
using blink::WebPluginContainer;
using blink::WebPrintParams;
using blink::WebPrintScalingOption;
using blink::WebScopedUserGesture;
using blink::WebString;
using blink::WebURLError;
using blink::WebURLLoader;
using blink::WebURLLoaderClient;
using blink::WebURLRequest;
using blink::WebURLResponse;
using blink::WebUserGestureIndicator;
using blink::WebUserGestureToken;
using blink::WebView;

namespace content {

#if defined(OS_WIN)
// Exported by pdf.dll
typedef bool (*RenderPDFPageToDCProc)(
    const unsigned char* pdf_buffer, int buffer_size, int page_number, HDC dc,
    int dpi_x, int dpi_y, int bounds_origin_x, int bounds_origin_y,
    int bounds_width, int bounds_height, bool fit_to_bounds,
    bool stretch_to_bounds, bool keep_aspect_ratio, bool center_in_bounds,
    bool autorotate);

void DrawEmptyRectangle(HDC dc) {
  // TODO(sanjeevr): This is a temporary hack. If we output a JPEG
  // to the EMF, the EnumEnhMetaFile call fails in the browser
  // process. The failure also happens if we output nothing here.
  // We need to investigate the reason for this failure and fix it.
  // In the meantime this temporary hack of drawing an empty
  // rectangle in the DC gets us by.
  Rectangle(dc, 0, 0, 0, 0);
}
#endif  // defined(OS_WIN)

namespace {

// Check PP_TextInput_Type and ui::TextInputType are kept in sync.
COMPILE_ASSERT(int(ui::TEXT_INPUT_TYPE_NONE) == \
    int(PP_TEXTINPUT_TYPE_NONE), mismatching_enums);
COMPILE_ASSERT(int(ui::TEXT_INPUT_TYPE_TEXT) == \
    int(PP_TEXTINPUT_TYPE_TEXT), mismatching_enums);
COMPILE_ASSERT(int(ui::TEXT_INPUT_TYPE_PASSWORD) == \
    int(PP_TEXTINPUT_TYPE_PASSWORD), mismatching_enums);
COMPILE_ASSERT(int(ui::TEXT_INPUT_TYPE_SEARCH) == \
    int(PP_TEXTINPUT_TYPE_SEARCH), mismatching_enums);
COMPILE_ASSERT(int(ui::TEXT_INPUT_TYPE_EMAIL) == \
    int(PP_TEXTINPUT_TYPE_EMAIL), mismatching_enums);
COMPILE_ASSERT(int(ui::TEXT_INPUT_TYPE_NUMBER) == \
    int(PP_TEXTINPUT_TYPE_NUMBER), mismatching_enums);
COMPILE_ASSERT(int(ui::TEXT_INPUT_TYPE_TELEPHONE) == \
    int(PP_TEXTINPUT_TYPE_TELEPHONE), mismatching_enums);
COMPILE_ASSERT(int(ui::TEXT_INPUT_TYPE_URL) == \
    int(PP_TEXTINPUT_TYPE_URL), mismatching_enums);

// The default text input type is to regard the plugin always accept text input.
// This is for allowing users to use input methods even on completely-IME-
// unaware plugins (e.g., PPAPI Flash or PDF plugin for M16).
// Plugins need to explicitly opt out the text input mode if they know
// that they don't accept texts.
const ui::TextInputType kPluginDefaultTextInputType = ui::TEXT_INPUT_TYPE_TEXT;

#define COMPILE_ASSERT_MATCHING_ENUM(webkit_name, np_name) \
    COMPILE_ASSERT(static_cast<int>(WebCursorInfo::webkit_name) \
                       == static_cast<int>(np_name), \
                   mismatching_enums)

#define COMPILE_ASSERT_PRINT_SCALING_MATCHING_ENUM(webkit_name, pp_name) \
    COMPILE_ASSERT(static_cast<int>(webkit_name) \
                       == static_cast<int>(pp_name), \
                   mismatching_enums)

// <embed>/<object> attributes.
const char kWidth[] = "width";
const char kHeight[] = "height";
const char kBorder[] = "border";  // According to w3c, deprecated.
const char kStyle[] = "style";

COMPILE_ASSERT_MATCHING_ENUM(TypePointer, PP_MOUSECURSOR_TYPE_POINTER);
COMPILE_ASSERT_MATCHING_ENUM(TypeCross, PP_MOUSECURSOR_TYPE_CROSS);
COMPILE_ASSERT_MATCHING_ENUM(TypeHand, PP_MOUSECURSOR_TYPE_HAND);
COMPILE_ASSERT_MATCHING_ENUM(TypeIBeam, PP_MOUSECURSOR_TYPE_IBEAM);
COMPILE_ASSERT_MATCHING_ENUM(TypeWait, PP_MOUSECURSOR_TYPE_WAIT);
COMPILE_ASSERT_MATCHING_ENUM(TypeHelp, PP_MOUSECURSOR_TYPE_HELP);
COMPILE_ASSERT_MATCHING_ENUM(TypeEastResize, PP_MOUSECURSOR_TYPE_EASTRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeNorthResize, PP_MOUSECURSOR_TYPE_NORTHRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeNorthEastResize,
                             PP_MOUSECURSOR_TYPE_NORTHEASTRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeNorthWestResize,
                             PP_MOUSECURSOR_TYPE_NORTHWESTRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeSouthResize, PP_MOUSECURSOR_TYPE_SOUTHRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeSouthEastResize,
                             PP_MOUSECURSOR_TYPE_SOUTHEASTRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeSouthWestResize,
                             PP_MOUSECURSOR_TYPE_SOUTHWESTRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeWestResize, PP_MOUSECURSOR_TYPE_WESTRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeNorthSouthResize,
                             PP_MOUSECURSOR_TYPE_NORTHSOUTHRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeEastWestResize,
                             PP_MOUSECURSOR_TYPE_EASTWESTRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeNorthEastSouthWestResize,
                             PP_MOUSECURSOR_TYPE_NORTHEASTSOUTHWESTRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeNorthWestSouthEastResize,
                             PP_MOUSECURSOR_TYPE_NORTHWESTSOUTHEASTRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeColumnResize,
                             PP_MOUSECURSOR_TYPE_COLUMNRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeRowResize, PP_MOUSECURSOR_TYPE_ROWRESIZE);
COMPILE_ASSERT_MATCHING_ENUM(TypeMiddlePanning,
                             PP_MOUSECURSOR_TYPE_MIDDLEPANNING);
COMPILE_ASSERT_MATCHING_ENUM(TypeEastPanning, PP_MOUSECURSOR_TYPE_EASTPANNING);
COMPILE_ASSERT_MATCHING_ENUM(TypeNorthPanning,
                             PP_MOUSECURSOR_TYPE_NORTHPANNING);
COMPILE_ASSERT_MATCHING_ENUM(TypeNorthEastPanning,
                             PP_MOUSECURSOR_TYPE_NORTHEASTPANNING);
COMPILE_ASSERT_MATCHING_ENUM(TypeNorthWestPanning,
                             PP_MOUSECURSOR_TYPE_NORTHWESTPANNING);
COMPILE_ASSERT_MATCHING_ENUM(TypeSouthPanning,
                             PP_MOUSECURSOR_TYPE_SOUTHPANNING);
COMPILE_ASSERT_MATCHING_ENUM(TypeSouthEastPanning,
                             PP_MOUSECURSOR_TYPE_SOUTHEASTPANNING);
COMPILE_ASSERT_MATCHING_ENUM(TypeSouthWestPanning,
                             PP_MOUSECURSOR_TYPE_SOUTHWESTPANNING);
COMPILE_ASSERT_MATCHING_ENUM(TypeWestPanning, PP_MOUSECURSOR_TYPE_WESTPANNING);
COMPILE_ASSERT_MATCHING_ENUM(TypeMove, PP_MOUSECURSOR_TYPE_MOVE);
COMPILE_ASSERT_MATCHING_ENUM(TypeVerticalText,
                             PP_MOUSECURSOR_TYPE_VERTICALTEXT);
COMPILE_ASSERT_MATCHING_ENUM(TypeCell, PP_MOUSECURSOR_TYPE_CELL);
COMPILE_ASSERT_MATCHING_ENUM(TypeContextMenu, PP_MOUSECURSOR_TYPE_CONTEXTMENU);
COMPILE_ASSERT_MATCHING_ENUM(TypeAlias, PP_MOUSECURSOR_TYPE_ALIAS);
COMPILE_ASSERT_MATCHING_ENUM(TypeProgress, PP_MOUSECURSOR_TYPE_PROGRESS);
COMPILE_ASSERT_MATCHING_ENUM(TypeNoDrop, PP_MOUSECURSOR_TYPE_NODROP);
COMPILE_ASSERT_MATCHING_ENUM(TypeCopy, PP_MOUSECURSOR_TYPE_COPY);
COMPILE_ASSERT_MATCHING_ENUM(TypeNone, PP_MOUSECURSOR_TYPE_NONE);
COMPILE_ASSERT_MATCHING_ENUM(TypeNotAllowed, PP_MOUSECURSOR_TYPE_NOTALLOWED);
COMPILE_ASSERT_MATCHING_ENUM(TypeZoomIn, PP_MOUSECURSOR_TYPE_ZOOMIN);
COMPILE_ASSERT_MATCHING_ENUM(TypeZoomOut, PP_MOUSECURSOR_TYPE_ZOOMOUT);
COMPILE_ASSERT_MATCHING_ENUM(TypeGrab, PP_MOUSECURSOR_TYPE_GRAB);
COMPILE_ASSERT_MATCHING_ENUM(TypeGrabbing, PP_MOUSECURSOR_TYPE_GRABBING);
// Do not assert WebCursorInfo::TypeCustom == PP_CURSORTYPE_CUSTOM;
// PP_CURSORTYPE_CUSTOM is pinned to allow new cursor types.

COMPILE_ASSERT_PRINT_SCALING_MATCHING_ENUM(blink::WebPrintScalingOptionNone,
                                           PP_PRINTSCALINGOPTION_NONE);
COMPILE_ASSERT_PRINT_SCALING_MATCHING_ENUM(
    blink::WebPrintScalingOptionFitToPrintableArea,
    PP_PRINTSCALINGOPTION_FIT_TO_PRINTABLE_AREA);
COMPILE_ASSERT_PRINT_SCALING_MATCHING_ENUM(
    blink::WebPrintScalingOptionSourceSize, PP_PRINTSCALINGOPTION_SOURCE_SIZE);

// Sets |*security_origin| to be the WebKit security origin associated with the
// document containing the given plugin instance. On success, returns true. If
// the instance is invalid, returns false and |*security_origin| will be
// unchanged.
bool SecurityOriginForInstance(PP_Instance instance_id,
                               blink::WebSecurityOrigin* security_origin) {
  PepperPluginInstanceImpl* instance =
      HostGlobals::Get()->GetInstance(instance_id);
  if (!instance)
    return false;

  WebElement plugin_element = instance->container()->element();
  *security_origin = plugin_element.document().securityOrigin();
  return true;
}

// Convert the given vector to an array of C-strings. The strings in the
// returned vector are only guaranteed valid so long as the vector of strings
// is not modified.
scoped_ptr<const char*[]> StringVectorToArgArray(
    const std::vector<std::string>& vector) {
  scoped_ptr<const char*[]> array(new const char*[vector.size()]);
  for (size_t i = 0; i < vector.size(); ++i)
    array[i] = vector[i].c_str();
  return array.Pass();
}

// Returns true if this is a "system reserved" key which should not be sent to
// a plugin. Some poorly behaving plugins (like Flash) incorrectly report that
// they handle all keys sent to them. This can prevent keystrokes from working
// for things like screen brightness and volume control.
bool IsReservedSystemInputEvent(const blink::WebInputEvent& event) {
#if defined(OS_CHROMEOS)
  if (event.type != WebInputEvent::KeyDown &&
      event.type != WebInputEvent::KeyUp)
    return false;
  const blink::WebKeyboardEvent& key_event =
      static_cast<const blink::WebKeyboardEvent&>(event);
  switch (key_event.windowsKeyCode) {
    case ui::VKEY_BRIGHTNESS_DOWN:
    case ui::VKEY_BRIGHTNESS_UP:
    case ui::VKEY_KBD_BRIGHTNESS_DOWN:
    case ui::VKEY_KBD_BRIGHTNESS_UP:
    case ui::VKEY_VOLUME_MUTE:
    case ui::VKEY_VOLUME_DOWN:
    case ui::VKEY_VOLUME_UP:
      return true;
    default:
      return false;
  }
#endif  // defined(OS_CHROMEOS)
  return false;
}

class PluginInstanceLockTarget : public MouseLockDispatcher::LockTarget {
 public:
  PluginInstanceLockTarget(PepperPluginInstanceImpl* plugin)
      : plugin_(plugin) {}

  virtual void OnLockMouseACK(bool succeeded) OVERRIDE {
    plugin_->OnLockMouseACK(succeeded);
  }

  virtual void OnMouseLockLost() OVERRIDE {
    plugin_->OnMouseLockLost();
  }

  virtual bool HandleMouseLockedInputEvent(
      const blink::WebMouseEvent &event) OVERRIDE {
    plugin_->HandleMouseLockedInputEvent(event);
    return true;
  }

 private:
  PepperPluginInstanceImpl* plugin_;
};


}  // namespace

// static
PepperPluginInstanceImpl* PepperPluginInstanceImpl::Create(
    RenderFrameImpl* render_frame,
    PluginModule* module,
    WebPluginContainer* container,
    const GURL& plugin_url) {
  base::Callback<const void*(const char*)> get_plugin_interface_func =
      base::Bind(&PluginModule::GetPluginInterface, module);
  PPP_Instance_Combined* ppp_instance_combined =
      PPP_Instance_Combined::Create(get_plugin_interface_func);
  if (!ppp_instance_combined)
    return NULL;
  return new PepperPluginInstanceImpl(render_frame, module,
                                      ppp_instance_combined, container,
                                      plugin_url);
}

PepperPluginInstanceImpl::ExternalDocumentLoader::ExternalDocumentLoader()
    : finished_loading_(false) {
}

PepperPluginInstanceImpl::ExternalDocumentLoader::~ExternalDocumentLoader() {
}

void PepperPluginInstanceImpl::ExternalDocumentLoader::ReplayReceivedData(
    WebURLLoaderClient* document_loader) {
  for (std::list<std::string>::iterator it = data_.begin();
       it != data_.end(); ++it) {
    document_loader->didReceiveData(NULL, it->c_str(), it->length(),
                                    0 /* encoded_data_length */);
  }
  if (finished_loading_) {
    document_loader->didFinishLoading(NULL, 0 /* finish_time */,
        blink::WebURLLoaderClient::kUnknownEncodedDataLength);
  }
  if (error_.get()) {
    document_loader->didFail(NULL, *error_);
  }
}

void PepperPluginInstanceImpl::ExternalDocumentLoader::didReceiveData(
    WebURLLoader* loader,
    const char* data,
    int data_length,
    int encoded_data_length) {
  data_.push_back(std::string(data, data_length));
}

void PepperPluginInstanceImpl::ExternalDocumentLoader::didFinishLoading(
    WebURLLoader* loader,
    double finish_time,
    int64_t total_encoded_data_length) {
  DCHECK(!finished_loading_);
  finished_loading_ = true;
}

void PepperPluginInstanceImpl::ExternalDocumentLoader::didFail(
    WebURLLoader* loader,
    const WebURLError& error) {
  DCHECK(!error_.get());
  error_.reset(new WebURLError(error));
}

PepperPluginInstanceImpl::GamepadImpl::GamepadImpl()
    : Resource(ppapi::Resource::Untracked()) {
}

PepperPluginInstanceImpl::GamepadImpl::~GamepadImpl() {
}

PPB_Gamepad_API* PepperPluginInstanceImpl::GamepadImpl::AsPPB_Gamepad_API() {
  return this;
}

void PepperPluginInstanceImpl::GamepadImpl::Sample(
    PP_Instance instance,
    PP_GamepadsSampleData* data) {
  blink::WebGamepads webkit_data;
  RenderThreadImpl::current()->SampleGamepads(&webkit_data);
  ConvertWebKitGamepadData(
      bit_cast<ppapi::WebKitGamepads>(webkit_data), data);
}

PepperPluginInstanceImpl::PepperPluginInstanceImpl(
    RenderFrameImpl* render_frame,
    PluginModule* module,
    ppapi::PPP_Instance_Combined* instance_interface,
    WebPluginContainer* container,
    const GURL& plugin_url)
    : RenderFrameObserver(render_frame),
      render_frame_(render_frame),
      module_(module),
      instance_interface_(instance_interface),
      pp_instance_(0),
      container_(container),
      layer_bound_to_fullscreen_(false),
      plugin_url_(plugin_url),
      full_frame_(false),
      sent_initial_did_change_view_(false),
      bound_graphics_2d_platform_(NULL),
      has_webkit_focus_(false),
      has_content_area_focus_(false),
      find_identifier_(-1),
      plugin_find_interface_(NULL),
      plugin_input_event_interface_(NULL),
      plugin_messaging_interface_(NULL),
      plugin_mouse_lock_interface_(NULL),
      plugin_pdf_interface_(NULL),
      plugin_private_interface_(NULL),
      plugin_selection_interface_(NULL),
      plugin_textinput_interface_(NULL),
      plugin_zoom_interface_(NULL),
      checked_for_plugin_input_event_interface_(false),
      checked_for_plugin_messaging_interface_(false),
      checked_for_plugin_pdf_interface_(false),
      gamepad_impl_(new GamepadImpl()),
      uma_private_impl_(NULL),
      plugin_print_interface_(NULL),
      plugin_graphics_3d_interface_(NULL),
      always_on_top_(false),
      fullscreen_container_(NULL),
      flash_fullscreen_(false),
      desired_fullscreen_state_(false),
      sad_plugin_(NULL),
      input_event_mask_(0),
      filtered_input_event_mask_(0),
      text_input_type_(kPluginDefaultTextInputType),
      text_input_caret_(0, 0, 0, 0),
      text_input_caret_bounds_(0, 0, 0, 0),
      text_input_caret_set_(false),
      selection_caret_(0),
      selection_anchor_(0),
      pending_user_gesture_(0.0),
      document_loader_(NULL),
      external_document_load_(false),
      npp_(new NPP_t),
      isolate_(v8::Isolate::GetCurrent()),
      is_deleted_(false),
      view_change_weak_ptr_factory_(this),
      weak_factory_(this) {
  pp_instance_ = HostGlobals::Get()->AddInstance(this);

  memset(&current_print_settings_, 0, sizeof(current_print_settings_));
  module_->InstanceCreated(this);

  if (render_frame) {  // NULL in tests
    render_frame->render_view()->PepperInstanceCreated(this);
    // Bind a callback now so that we can inform the RenderViewImpl when we are
    // destroyed. This works around a temporary problem stemming from work to
    // move parts of RenderViewImpl in to RenderFrameImpl (see
    // crbug.com/245126). If destruction happens in this order:
    //  1) RenderFrameImpl
    //  2) PepperPluginInstanceImpl
    //  3) RenderViewImpl
    // Then after 1), the PepperPluginInstanceImpl doesn't have any way to talk
    // to the RenderViewImpl. But when the instance is destroyed, it still
    // needs to inform the RenderViewImpl that it has gone away, otherwise
    // between (2) and (3), the RenderViewImpl will still have the dead
    // instance in its active set, and so might make calls on the deleted
    // instance. See crbug.com/343576 for more information. Once the plugin
    // calls move entirely from RenderViewImpl in to RenderFrameImpl, this
    // can be a little bit simplified by instead making a direct call on
    // RenderFrameImpl in the destructor (but only if render_frame_ is valid).
    instance_deleted_callback_ =
        base::Bind(&RenderViewImpl::PepperInstanceDeleted,
                   render_frame->render_view()->AsWeakPtr(),
                   base::Unretained(this));
    view_data_.is_page_visible = !render_frame_->GetRenderWidget()->is_hidden();

    // Set the initial focus.
    SetContentAreaFocus(render_frame_->GetRenderWidget()->has_focus());

    if (!module_->IsProxied()) {
      PepperBrowserConnection* browser_connection =
          PepperBrowserConnection::Get(render_frame_);
      browser_connection->DidCreateInProcessInstance(
          pp_instance(),
          render_frame_->GetRoutingID(),
          container_->element().document().url(),
          GetPluginURL());
    }
  }

  RendererPpapiHostImpl* host_impl = module_->renderer_ppapi_host();
  resource_creation_ = host_impl->CreateInProcessResourceCreationAPI(this);

  if (GetContentClient()->renderer() &&  // NULL in unit tests.
      GetContentClient()->renderer()->IsExternalPepperPlugin(module->name()))
    external_document_load_ = true;
}

PepperPluginInstanceImpl::~PepperPluginInstanceImpl() {
  DCHECK(!fullscreen_container_);

  // Free all the plugin objects. This will automatically clear the back-
  // pointer from the NPObject so WebKit can't call into the plugin any more.
  //
  // Swap out the set so we can delete from it (the objects will try to
  // unregister themselves inside the delete call).
  PluginObjectSet plugin_object_copy;
  live_plugin_objects_.swap(plugin_object_copy);
  for (PluginObjectSet::iterator i = plugin_object_copy.begin();
       i != plugin_object_copy.end(); ++i)
    delete *i;

  if (TrackedCallback::IsPending(lock_mouse_callback_))
    lock_mouse_callback_->Abort();

  if (!instance_deleted_callback_.is_null())
    instance_deleted_callback_.Run();

  if (!module_->IsProxied() && render_frame_) {
    PepperBrowserConnection* browser_connection =
        PepperBrowserConnection::Get(render_frame_);
    browser_connection->DidDeleteInProcessInstance(pp_instance());
  }

  UnSetAndDeleteLockTargetAdapter();
  module_->InstanceDeleted(this);
  // If we switched from the NaCl plugin module, notify it too.
  if (original_module_.get())
    original_module_->InstanceDeleted(this);

  // This should be last since some of the above "instance deleted" calls will
  // want to look up in the global map to get info off of our object.
  HostGlobals::Get()->InstanceDeleted(pp_instance_);
}

// NOTE: Any of these methods that calls into the plugin needs to take into
// account that the plugin may use Var to remove the <embed> from the DOM, which
// will make the PepperWebPluginImpl drop its reference, usually the last one.
// If a method needs to access a member of the instance after the call has
// returned, then it needs to keep its own reference on the stack.

void PepperPluginInstanceImpl::Delete() {
  is_deleted_ = true;

  if (render_frame_ &&
      render_frame_->render_view()->plugin_find_handler() == this) {
    render_frame_->render_view()->set_plugin_find_handler(NULL);
  }

  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  // Force the MessageChannel to release its "passthrough object" which should
  // release our last reference to the "InstanceObject" and will probably
  // destroy it. We want to do this prior to calling DidDestroy in case the
  // destructor of the instance object tries to use the instance.
  message_channel_->SetPassthroughObject(NULL);
  // If this is a NaCl plugin instance, shut down the NaCl plugin by calling
  // its DidDestroy. Don't call DidDestroy on the untrusted plugin instance,
  // since there is little that it can do at this point.
  if (original_instance_interface_)
    original_instance_interface_->DidDestroy(pp_instance());
  else
    instance_interface_->DidDestroy(pp_instance());
  // Ensure we don't attempt to call functions on the destroyed instance.
  original_instance_interface_.reset();
  instance_interface_.reset();

  if (fullscreen_container_) {
    fullscreen_container_->Destroy();
    fullscreen_container_ = NULL;
  }

  // Force-unbind any Graphics. In the case of Graphics2D, if the plugin
  // leaks the graphics 2D, it may actually get cleaned up after our
  // destruction, so we need its pointers to be up-to-date.
  BindGraphics(pp_instance(), 0);
  container_ = NULL;
}

bool PepperPluginInstanceImpl::is_deleted() const {
  return is_deleted_;
}

void PepperPluginInstanceImpl::Paint(WebCanvas* canvas,
                                     const gfx::Rect& plugin_rect,
                                     const gfx::Rect& paint_rect) {
  TRACE_EVENT0("ppapi", "PluginInstance::Paint");
  if (module()->is_crashed()) {
    // Crashed plugin painting.
    if (!sad_plugin_)  // Lazily initialize bitmap.
      sad_plugin_ = GetContentClient()->renderer()->GetSadPluginBitmap();
    if (sad_plugin_)
      PaintSadPlugin(canvas, plugin_rect, *sad_plugin_);
    return;
  }

  if (bound_graphics_2d_platform_)
    bound_graphics_2d_platform_->Paint(canvas, plugin_rect, paint_rect);
}

void PepperPluginInstanceImpl::InvalidateRect(const gfx::Rect& rect) {
  if (fullscreen_container_) {
    if (rect.IsEmpty())
      fullscreen_container_->Invalidate();
    else
      fullscreen_container_->InvalidateRect(rect);
  } else {
    if (!container_ ||
        view_data_.rect.size.width == 0 || view_data_.rect.size.height == 0)
      return;  // Nothing to do.
    if (rect.IsEmpty())
      container_->invalidate();
    else
      container_->invalidateRect(rect);
  }
  if (texture_layer_) {
    if (rect.IsEmpty()) {
      texture_layer_->SetNeedsDisplay();
    } else {
      texture_layer_->SetNeedsDisplayRect(rect);
    }
  }
}

void PepperPluginInstanceImpl::ScrollRect(int dx,
                                          int dy,
                                          const gfx::Rect& rect) {
  if (texture_layer_) {
    InvalidateRect(rect);
  } else if (fullscreen_container_) {
    fullscreen_container_->ScrollRect(dx, dy, rect);
  } else {
    if (full_frame_ && !IsViewAccelerated()) {
      container_->scrollRect(dx, dy, rect);
    } else {
      // Can't do optimized scrolling since there could be other elements on top
      // of us or the view renders via the accelerated compositor which is
      // incompatible with the move and backfill scrolling model.
      InvalidateRect(rect);
    }
  }
}

void PepperPluginInstanceImpl::CommitBackingTexture() {
  if (!texture_layer_.get())
    return;
  PlatformContext3D* context = bound_graphics_3d_->platform_context();
  gpu::Mailbox mailbox;
  uint32 sync_point = 0;
  context->GetBackingMailbox(&mailbox, &sync_point);
  DCHECK(!mailbox.IsZero());
  DCHECK_NE(sync_point, 0u);
  texture_layer_->SetTextureMailboxWithoutReleaseCallback(
      cc::TextureMailbox(mailbox, GL_TEXTURE_2D, sync_point));
  texture_layer_->SetNeedsDisplay();
}

void PepperPluginInstanceImpl::InstanceCrashed() {
  // Force free all resources and vars.
  HostGlobals::Get()->InstanceCrashed(pp_instance());

  // Free any associated graphics.
  SetFullscreen(false);
  FlashSetFullscreen(false, false);
  // Unbind current 2D or 3D graphics context.
  BindGraphics(pp_instance(), 0);
  InvalidateRect(gfx::Rect());

  if (content_decryptor_delegate_) {
    content_decryptor_delegate_->InstanceCrashed();
    content_decryptor_delegate_.reset();
  }

  if (render_frame_)
    render_frame_->PluginCrashed(module_->path(), module_->GetPeerProcessId());
  UnSetAndDeleteLockTargetAdapter();
}

static void SetGPUHistogram(const ppapi::Preferences& prefs,
                            const std::vector<std::string>& arg_names,
                            const std::vector<std::string>& arg_values) {
  // Calculate a histogram to let us determine how likely people are to try to
  // run Stage3D content on machines that have it blacklisted.
#if defined(OS_WIN)
  bool needs_gpu = false;
  bool is_xp = base::win::GetVersion() <= base::win::VERSION_XP;

  for (size_t i = 0; i < arg_names.size(); i++) {
    if (arg_names[i] == "wmode") {
      // In theory content other than Flash could have a "wmode" argument,
      // but that's pretty unlikely.
      if (arg_values[i] == "direct" || arg_values[i] == "gpu")
        needs_gpu = true;
      break;
    }
  }
  // 0 : No 3D content and GPU is blacklisted
  // 1 : No 3D content and GPU is not blacklisted
  // 2 : 3D content but GPU is blacklisted
  // 3 : 3D content and GPU is not blacklisted
  // 4 : No 3D content and GPU is blacklisted on XP
  // 5 : No 3D content and GPU is not blacklisted on XP
  // 6 : 3D content but GPU is blacklisted on XP
  // 7 : 3D content and GPU is not blacklisted on XP
  UMA_HISTOGRAM_ENUMERATION("Flash.UsesGPU",
      is_xp * 4 + needs_gpu * 2 + prefs.is_webgl_supported, 8);
#endif
}

bool PepperPluginInstanceImpl::Initialize(
    const std::vector<std::string>& arg_names,
    const std::vector<std::string>& arg_values,
    bool full_frame) {
  if (!render_frame_)
    return false;
  message_channel_.reset(new MessageChannel(this));

  full_frame_ = full_frame;

  UpdateTouchEventRequest();
  container_->setWantsWheelEvents(IsAcceptingWheelEvents());

  SetGPUHistogram(ppapi::Preferences(
      render_frame_->render_view()->webkit_preferences()),
      arg_names, arg_values);

  argn_ = arg_names;
  argv_ = arg_values;
  scoped_ptr<const char*[]> argn_array(StringVectorToArgArray(argn_));
  scoped_ptr<const char*[]> argv_array(StringVectorToArgArray(argv_));
  bool success =  PP_ToBool(instance_interface_->DidCreate(pp_instance(),
                                                           argn_.size(),
                                                           argn_array.get(),
                                                           argv_array.get()));
  if (success)
    message_channel_->StopQueueingJavaScriptMessages();
  return success;
}

bool PepperPluginInstanceImpl::HandleDocumentLoad(
    const blink::WebURLResponse& response) {
  DCHECK(!document_loader_);
  if (external_document_load_) {
    // The external proxy isn't available, so save the response and record
    // document load notifications for later replay.
    external_document_response_ = response;
    external_document_loader_.reset(new ExternalDocumentLoader());
    document_loader_ = external_document_loader_.get();
    return true;
  }

  if (module()->is_crashed()) {
    // Don't create a resource for a crashed plugin.
    container()->element().document().frame()->stopLoading();
    return false;
  }

  DCHECK(!document_loader_);

  // Create a loader resource host for this load. Note that we have to set
  // the document_loader before issuing the in-process
  // PPP_Instance.HandleDocumentLoad call below, since this may reentrantly
  // call into the instance and expect it to be valid.
  RendererPpapiHostImpl* host_impl = module_->renderer_ppapi_host();
  PepperURLLoaderHost* loader_host =
      new PepperURLLoaderHost(host_impl, true, pp_instance(), 0);
  // TODO(teravest): Remove set_document_loader() from instance and clean up
  // this relationship.
  set_document_loader(loader_host);
  loader_host->didReceiveResponse(NULL, response);

  // This host will be pending until the resource object attaches to it.
  //
  // PpapiHost now owns the pointer to loader_host, so we don't have to worry
  // about managing it.
  int pending_host_id = host_impl->GetPpapiHost()->AddPendingResourceHost(
      scoped_ptr<ppapi::host::ResourceHost>(loader_host));
  DCHECK(pending_host_id);

  DataFromWebURLResponse(
      host_impl,
      pp_instance(),
      response,
      base::Bind(&PepperPluginInstanceImpl::DidDataFromWebURLResponse,
                 weak_factory_.GetWeakPtr(),
                 response,
                 pending_host_id));

  // If the load was not abandoned, document_loader_ will now be set. It's
  // possible that the load was canceled by now and document_loader_ was
  // already nulled out.
  return true;
}

bool PepperPluginInstanceImpl::SendCompositionEventToPlugin(
    PP_InputEvent_Type type, const base::string16& text) {
  std::vector<blink::WebCompositionUnderline> empty;
  return SendCompositionEventWithUnderlineInformationToPlugin(
      type, text, empty, static_cast<int>(text.size()),
      static_cast<int>(text.size()));
}

bool PepperPluginInstanceImpl::
    SendCompositionEventWithUnderlineInformationToPlugin(
        PP_InputEvent_Type type,
        const base::string16& text,
        const std::vector<blink::WebCompositionUnderline>& underlines,
        int selection_start,
        int selection_end) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);

  if (!LoadInputEventInterface())
    return false;

  PP_InputEvent_Class event_class = PP_INPUTEVENT_CLASS_IME;
  if (!(filtered_input_event_mask_ & event_class) &&
      !(input_event_mask_ & event_class))
    return false;

  ppapi::InputEventData event;
  event.event_type = type;
  event.event_time_stamp = ppapi::TimeTicksToPPTimeTicks(
      base::TimeTicks::Now());

  // Convert UTF16 text to UTF8 with offset conversion.
  std::vector<size_t> utf16_offsets;
  utf16_offsets.push_back(selection_start);
  utf16_offsets.push_back(selection_end);
  for (size_t i = 0; i < underlines.size(); ++i) {
    utf16_offsets.push_back(underlines[i].startOffset);
    utf16_offsets.push_back(underlines[i].endOffset);
  }
  std::vector<size_t> utf8_offsets(utf16_offsets);
  event.character_text = base::UTF16ToUTF8AndAdjustOffsets(text, &utf8_offsets);

  // Set the converted selection range.
  event.composition_selection_start = (utf8_offsets[0] == std::string::npos ?
      event.character_text.size() : utf8_offsets[0]);
  event.composition_selection_end = (utf8_offsets[1] == std::string::npos ?
      event.character_text.size() : utf8_offsets[1]);

  // Set the converted segmentation points.
  // Be sure to add 0 and size(), and remove duplication or errors.
  std::set<size_t> offset_set(utf8_offsets.begin()+2, utf8_offsets.end());
  offset_set.insert(0);
  offset_set.insert(event.character_text.size());
  offset_set.erase(std::string::npos);
  event.composition_segment_offsets.assign(offset_set.begin(),
                                           offset_set.end());

  // Set the composition target.
  for (size_t i = 0; i < underlines.size(); ++i) {
    if (underlines[i].thick) {
      std::vector<uint32_t>::iterator it =
          std::find(event.composition_segment_offsets.begin(),
                    event.composition_segment_offsets.end(),
                    utf8_offsets[2*i+2]);
      if (it != event.composition_segment_offsets.end()) {
        event.composition_target_segment =
            it - event.composition_segment_offsets.begin();
        break;
      }
    }
  }

  // Send the event.
  bool handled = false;
  if (filtered_input_event_mask_ & event_class)
    event.is_filtered = true;
  else
    handled = true;  // Unfiltered events are assumed to be handled.
  scoped_refptr<PPB_InputEvent_Shared> event_resource(
      new PPB_InputEvent_Shared(ppapi::OBJECT_IS_IMPL, pp_instance(), event));
  handled |= PP_ToBool(plugin_input_event_interface_->HandleInputEvent(
      pp_instance(), event_resource->pp_resource()));
  return handled;
}

void PepperPluginInstanceImpl::RequestInputEventsHelper(
    uint32_t event_classes) {
  if (event_classes & PP_INPUTEVENT_CLASS_TOUCH)
    UpdateTouchEventRequest();
  if (event_classes & PP_INPUTEVENT_CLASS_WHEEL)
    container_->setWantsWheelEvents(IsAcceptingWheelEvents());
}

bool PepperPluginInstanceImpl::HandleCompositionStart(
    const base::string16& text) {
  return SendCompositionEventToPlugin(PP_INPUTEVENT_TYPE_IME_COMPOSITION_START,
                                      text);
}

bool PepperPluginInstanceImpl::HandleCompositionUpdate(
    const base::string16& text,
    const std::vector<blink::WebCompositionUnderline>& underlines,
    int selection_start,
    int selection_end) {
  return SendCompositionEventWithUnderlineInformationToPlugin(
      PP_INPUTEVENT_TYPE_IME_COMPOSITION_UPDATE,
      text, underlines, selection_start, selection_end);
}

bool PepperPluginInstanceImpl::HandleCompositionEnd(
    const base::string16& text) {
  return SendCompositionEventToPlugin(PP_INPUTEVENT_TYPE_IME_COMPOSITION_END,
                                      text);
}

bool PepperPluginInstanceImpl::HandleTextInput(const base::string16& text) {
  return SendCompositionEventToPlugin(PP_INPUTEVENT_TYPE_IME_TEXT,
                                      text);
}

void PepperPluginInstanceImpl::GetSurroundingText(base::string16* text,
                                                  gfx::Range* range) const {
  std::vector<size_t> offsets;
  offsets.push_back(selection_anchor_);
  offsets.push_back(selection_caret_);
  *text = base::UTF8ToUTF16AndAdjustOffsets(surrounding_text_, &offsets);
  range->set_start(offsets[0] == base::string16::npos ? text->size()
                                                      : offsets[0]);
  range->set_end(offsets[1] == base::string16::npos ? text->size()
                                                    : offsets[1]);
}

bool PepperPluginInstanceImpl::IsPluginAcceptingCompositionEvents() const {
  return (filtered_input_event_mask_ & PP_INPUTEVENT_CLASS_IME) ||
      (input_event_mask_ & PP_INPUTEVENT_CLASS_IME);
}

gfx::Rect PepperPluginInstanceImpl::GetCaretBounds() const {
  if (!text_input_caret_set_) {
    // If it is never set by the plugin, use the bottom left corner.
    return gfx::Rect(view_data_.rect.point.x,
                     view_data_.rect.point.y + view_data_.rect.size.height,
                     0, 0);
  }

  // TODO(kinaba) Take CSS transformation into accont.
  // TODO(kinaba) Take bounding_box into account. On some platforms, an
  // "exclude rectangle" where candidate window must avoid the region can be
  // passed to IME. Currently, we pass only the caret rectangle because
  // it is the only information supported uniformly in Chromium.
  gfx::Rect caret(text_input_caret_);
  caret.Offset(view_data_.rect.point.x, view_data_.rect.point.y);
  return caret;
}

bool PepperPluginInstanceImpl::HandleInputEvent(
    const blink::WebInputEvent& event,
    WebCursorInfo* cursor_info) {
  TRACE_EVENT0("ppapi", "PepperPluginInstanceImpl::HandleInputEvent");

  if (!render_frame_)
    return false;
  if (WebInputEvent::isMouseEventType(event.type)) {
    render_frame_->PepperDidReceiveMouseEvent(this);
  }

  // Don't dispatch input events to crashed plugins.
  if (module()->is_crashed())
    return false;

  // Don't send reserved system key events to plugins.
  if (IsReservedSystemInputEvent(event))
    return false;

  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);

  bool rv = false;
  if (LoadInputEventInterface()) {
    PP_InputEvent_Class event_class = ClassifyInputEvent(event.type);
    if (!event_class)
      return false;

    if ((filtered_input_event_mask_ & event_class) ||
        (input_event_mask_ & event_class)) {
      // Actually send the event.
      std::vector< ppapi::InputEventData > events;
      CreateInputEventData(event, &events);

      // Allow the user gesture to be pending after the plugin handles the
      // event. This allows out-of-process plugins to respond to the user
      // gesture after processing has finished here.
      if (WebUserGestureIndicator::isProcessingUserGesture()) {
        pending_user_gesture_ =
            ppapi::EventTimeToPPTimeTicks(event.timeStampSeconds);
        pending_user_gesture_token_ =
            WebUserGestureIndicator::currentUserGestureToken();
        pending_user_gesture_token_.setOutOfProcess();
      }

      // Each input event may generate more than one PP_InputEvent.
      for (size_t i = 0; i < events.size(); i++) {
        if (filtered_input_event_mask_ & event_class)
          events[i].is_filtered = true;
        else
          rv = true;  // Unfiltered events are assumed to be handled.
        scoped_refptr<PPB_InputEvent_Shared> event_resource(
            new PPB_InputEvent_Shared(ppapi::OBJECT_IS_IMPL,
                                      pp_instance(), events[i]));

        rv |= PP_ToBool(plugin_input_event_interface_->HandleInputEvent(
            pp_instance(), event_resource->pp_resource()));
      }
    }
  }

  if (cursor_)
    *cursor_info = *cursor_;
  return rv;
}

void PepperPluginInstanceImpl::HandleMessage(PP_Var message) {
  TRACE_EVENT0("ppapi", "PepperPluginInstanceImpl::HandleMessage");
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (!LoadMessagingInterface())
    return;
  plugin_messaging_interface_->HandleMessage(pp_instance(), message);
}

PP_Var PepperPluginInstanceImpl::GetInstanceObject() {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);

  // If the plugin supports the private instance interface, try to retrieve its
  // instance object.
  if (LoadPrivateInterface())
    return plugin_private_interface_->GetInstanceObject(pp_instance());
  return PP_MakeUndefined();
}

void PepperPluginInstanceImpl::ViewChanged(
    const gfx::Rect& position,
    const gfx::Rect& clip,
    const std::vector<gfx::Rect>& cut_outs_rects) {
  // WebKit can give weird (x,y) positions for empty clip rects (since the
  // position technically doesn't matter). But we want to make these
  // consistent since this is given to the plugin, so force everything to 0
  // in the "everything is clipped" case.
  gfx::Rect new_clip;
  if (!clip.IsEmpty())
    new_clip = clip;

  cut_outs_rects_ = cut_outs_rects;

  view_data_.rect = PP_FromGfxRect(position);
  view_data_.clip_rect = PP_FromGfxRect(clip);
  view_data_.device_scale = container_->deviceScaleFactor();
  view_data_.css_scale = container_->pageZoomFactor() *
                         container_->pageScaleFactor();

  if (desired_fullscreen_state_ || view_data_.is_fullscreen) {
    WebElement element = container_->element();
    WebDocument document = element.document();
    bool is_fullscreen_element = (element == document.fullScreenElement());
    if (!view_data_.is_fullscreen && desired_fullscreen_state_ &&
        render_frame()->GetRenderWidget()->is_fullscreen() &&
        is_fullscreen_element) {
      // Entered fullscreen. Only possible via SetFullscreen().
      view_data_.is_fullscreen = true;
    } else if (view_data_.is_fullscreen && !is_fullscreen_element) {
      // Exited fullscreen. Possible via SetFullscreen() or F11/link,
      // so desired_fullscreen_state might be out-of-date.
      desired_fullscreen_state_ = false;
      view_data_.is_fullscreen = false;

      // This operation will cause the plugin to re-layout which will send more
      // DidChangeView updates. Schedule an asynchronous update and suppress
      // notifications until that completes to avoid sending intermediate sizes
      // to the plugins.
      ScheduleAsyncDidChangeView();

      // Reset the size attributes that we hacked to fill in the screen and
      // retrigger ViewChanged. Make sure we don't forward duplicates of
      // this view to the plugin.
      ResetSizeAttributesAfterFullscreen();
      return;
    }
  }

  UpdateFlashFullscreenState(fullscreen_container_ != NULL);

  SendDidChangeView();
}

void PepperPluginInstanceImpl::SetWebKitFocus(bool has_focus) {
  if (has_webkit_focus_ == has_focus)
    return;

  bool old_plugin_focus = PluginHasFocus();
  has_webkit_focus_ = has_focus;
  if (PluginHasFocus() != old_plugin_focus)
    SendFocusChangeNotification();
}

void PepperPluginInstanceImpl::SetContentAreaFocus(bool has_focus) {
  if (has_content_area_focus_ == has_focus)
    return;

  bool old_plugin_focus = PluginHasFocus();
  has_content_area_focus_ = has_focus;
  if (PluginHasFocus() != old_plugin_focus)
    SendFocusChangeNotification();
}

void PepperPluginInstanceImpl::PageVisibilityChanged(bool is_visible) {
  if (is_visible == view_data_.is_page_visible)
    return;  // Nothing to do.
  view_data_.is_page_visible = is_visible;

  // If the initial DidChangeView notification hasn't been sent to the plugin,
  // let it pass the visibility state for us, instead of sending a notification
  // immediately. It is possible that PepperPluginInstanceImpl::ViewChanged()
  // hasn't been called for the first time. In that case, most of the fields in
  // |view_data_| haven't been properly initialized.
  if (sent_initial_did_change_view_)
    SendDidChangeView();
}

void PepperPluginInstanceImpl::ViewInitiatedPaint() {
  if (bound_graphics_2d_platform_)
    bound_graphics_2d_platform_->ViewInitiatedPaint();
  else if (bound_graphics_3d_.get())
    bound_graphics_3d_->ViewInitiatedPaint();
}

void PepperPluginInstanceImpl::ViewFlushedPaint() {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (bound_graphics_2d_platform_)
    bound_graphics_2d_platform_->ViewFlushedPaint();
  else if (bound_graphics_3d_.get())
    bound_graphics_3d_->ViewFlushedPaint();
}

bool PepperPluginInstanceImpl::GetBitmapForOptimizedPluginPaint(
    const gfx::Rect& paint_bounds,
    TransportDIB** dib,
    gfx::Rect* location,
    gfx::Rect* clip,
    float* scale_factor) {
  if (!always_on_top_)
    return false;
  if (!bound_graphics_2d_platform_ ||
      !bound_graphics_2d_platform_->IsAlwaysOpaque()) {
    return false;
  }

  // We specifically want to compare against the area covered by the backing
  // store when seeing if we cover the given paint bounds, since the backing
  // store could be smaller than the declared plugin area.
  PPB_ImageData_Impl* image_data = bound_graphics_2d_platform_->ImageData();
  // ImageDatas created by NaCl don't have a TransportDIB, so can't be
  // optimized this way.
  if (!image_data->GetTransportDIB())
    return false;

  gfx::Point plugin_origin = PP_ToGfxPoint(view_data_.rect.point);
  gfx::Vector2d plugin_offset = plugin_origin.OffsetFromOrigin();
  // Convert |paint_bounds| to be relative to the left-top corner of the plugin.
  gfx::Rect relative_paint_bounds(paint_bounds);
  relative_paint_bounds.Offset(-plugin_offset);

  gfx::Rect pixel_plugin_backing_store_rect(
      0, 0, image_data->width(), image_data->height());
  float scale = bound_graphics_2d_platform_->GetScale();
  gfx::Rect plugin_backing_store_rect = gfx::ToEnclosedRect(
      gfx::ScaleRect(pixel_plugin_backing_store_rect, scale));

  gfx::Rect clip_page = PP_ToGfxRect(view_data_.clip_rect);
  gfx::Rect plugin_paint_rect =
      gfx::IntersectRects(plugin_backing_store_rect, clip_page);
  if (!plugin_paint_rect.Contains(relative_paint_bounds))
    return false;

  // Don't do optimized painting if the area to paint intersects with the
  // cut-out rects, otherwise we will paint over them.
  for (std::vector<gfx::Rect>::const_iterator iter = cut_outs_rects_.begin();
       iter != cut_outs_rects_.end(); ++iter) {
    if (relative_paint_bounds.Intersects(*iter))
      return false;
  }

  *dib = image_data->GetTransportDIB();
  plugin_backing_store_rect.Offset(plugin_offset);
  *location = plugin_backing_store_rect;
  clip_page.Offset(plugin_offset);
  *clip = clip_page;
  // The plugin scale factor is inverted, e.g. for a device scale factor of 2x
  // the plugin scale factor is 0.5.
  *scale_factor = 1.0 / scale;
  return true;
}

void PepperPluginInstanceImpl::SetSelectedText(
    const base::string16& selected_text) {
  selected_text_ = selected_text;
}

void PepperPluginInstanceImpl::SetLinkUnderCursor(const std::string& url) {
  link_under_cursor_ = base::UTF8ToUTF16(url);
}

base::string16 PepperPluginInstanceImpl::GetSelectedText(bool html) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (!LoadSelectionInterface())
    return selected_text_;

  PP_Var rv = plugin_selection_interface_->GetSelectedText(pp_instance(),
                                                           PP_FromBool(html));
  StringVar* string = StringVar::FromPPVar(rv);
  base::string16 selection;
  if (string)
    selection = base::UTF8ToUTF16(string->value());
  // Release the ref the plugin transfered to us.
  HostGlobals::Get()->GetVarTracker()->ReleaseVar(rv);
  return selection;
}

base::string16 PepperPluginInstanceImpl::GetLinkAtPosition(
    const gfx::Point& point) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (!LoadPdfInterface()) {
    // TODO(koz): Change the containing function to GetLinkUnderCursor(). We can
    // return |link_under_cursor_| here because this is only ever called with
    // the current mouse coordinates.
    return link_under_cursor_;
  }

  PP_Point p;
  p.x = point.x();
  p.y = point.y();
  PP_Var rv = plugin_pdf_interface_->GetLinkAtPosition(pp_instance(), p);
  // If the plugin returns undefined for this function it has switched to
  // providing us with the link under the cursor eagerly.
  if (rv.type == PP_VARTYPE_UNDEFINED)
    return link_under_cursor_;
  StringVar* string = StringVar::FromPPVar(rv);
  base::string16 link;
  if (string)
    link = base::UTF8ToUTF16(string->value());
  // Release the ref the plugin transfered to us.
  PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(rv);
  return link;
}

void PepperPluginInstanceImpl::RequestSurroundingText(
    size_t desired_number_of_characters) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (!LoadTextInputInterface())
    return;
  plugin_textinput_interface_->RequestSurroundingText(
      pp_instance(), desired_number_of_characters);
}

void PepperPluginInstanceImpl::Zoom(double factor, bool text_only) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (!LoadZoomInterface())
    return;
  plugin_zoom_interface_->Zoom(pp_instance(), factor, PP_FromBool(text_only));
}

bool PepperPluginInstanceImpl::StartFind(const base::string16& search_text,
                                         bool case_sensitive,
                                         int identifier) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (!LoadFindInterface())
    return false;
  find_identifier_ = identifier;
  return PP_ToBool(
      plugin_find_interface_->StartFind(
          pp_instance(),
          base::UTF16ToUTF8(search_text).c_str(),
          PP_FromBool(case_sensitive)));
}

void PepperPluginInstanceImpl::SelectFindResult(bool forward) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (LoadFindInterface())
    plugin_find_interface_->SelectFindResult(pp_instance(),
                                             PP_FromBool(forward));
}

void PepperPluginInstanceImpl::StopFind() {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (!LoadFindInterface())
    return;
  find_identifier_ = -1;
  plugin_find_interface_->StopFind(pp_instance());
}

bool PepperPluginInstanceImpl::LoadFindInterface() {
  if (!module_->permissions().HasPermission(ppapi::PERMISSION_PRIVATE))
    return false;
  if (!plugin_find_interface_) {
    plugin_find_interface_ =
        static_cast<const PPP_Find_Private*>(module_->GetPluginInterface(
            PPP_FIND_PRIVATE_INTERFACE));
  }

  return !!plugin_find_interface_;
}

bool PepperPluginInstanceImpl::LoadInputEventInterface() {
  if (!checked_for_plugin_input_event_interface_) {
    checked_for_plugin_input_event_interface_ = true;
    plugin_input_event_interface_ =
        static_cast<const PPP_InputEvent*>(module_->GetPluginInterface(
            PPP_INPUT_EVENT_INTERFACE));
  }
  return !!plugin_input_event_interface_;
}

bool PepperPluginInstanceImpl::LoadMessagingInterface() {
  if (!checked_for_plugin_messaging_interface_) {
    checked_for_plugin_messaging_interface_ = true;
    plugin_messaging_interface_ =
        static_cast<const PPP_Messaging*>(module_->GetPluginInterface(
            PPP_MESSAGING_INTERFACE));
  }
  return !!plugin_messaging_interface_;
}

bool PepperPluginInstanceImpl::LoadMouseLockInterface() {
  if (!plugin_mouse_lock_interface_) {
    plugin_mouse_lock_interface_ =
        static_cast<const PPP_MouseLock*>(module_->GetPluginInterface(
            PPP_MOUSELOCK_INTERFACE));
  }

  return !!plugin_mouse_lock_interface_;
}

bool PepperPluginInstanceImpl::LoadPdfInterface() {
  if (!checked_for_plugin_pdf_interface_) {
    checked_for_plugin_pdf_interface_ = true;
    plugin_pdf_interface_ =
        static_cast<const PPP_Pdf_1*>(module_->GetPluginInterface(
            PPP_PDF_INTERFACE_1));
  }

  return !!plugin_pdf_interface_;
}

bool PepperPluginInstanceImpl::LoadPrintInterface() {
  // Only check for the interface if the plugin has dev permission.
  if (!module_->permissions().HasPermission(ppapi::PERMISSION_DEV))
    return false;
  if (!plugin_print_interface_) {
    plugin_print_interface_ = static_cast<const PPP_Printing_Dev*>(
        module_->GetPluginInterface(PPP_PRINTING_DEV_INTERFACE));
  }
  return !!plugin_print_interface_;
}

bool PepperPluginInstanceImpl::LoadPrivateInterface() {
  // If this is a NaCl app, we want to talk to the trusted NaCl plugin to
  // call GetInstanceObject. This is necessary to ensure that the properties
  // the trusted plugin exposes (readyState and lastError) work properly. Note
  // that untrusted NaCl apps are not allowed to provide PPP_InstancePrivate,
  // so it's correct to never look up PPP_InstancePrivate for them.
  //
  // If this is *not* a NaCl plugin, original_module_ will never be set; we talk
  // to the "real" module.
  scoped_refptr<PluginModule> module = original_module_ ? original_module_ :
                                                          module_;
  // Only check for the interface if the plugin has private permission.
  if (!module->permissions().HasPermission(ppapi::PERMISSION_PRIVATE))
    return false;
  if (!plugin_private_interface_) {
    plugin_private_interface_ = static_cast<const PPP_Instance_Private*>(
        module->GetPluginInterface(PPP_INSTANCE_PRIVATE_INTERFACE));
  }

  return !!plugin_private_interface_;
}

bool PepperPluginInstanceImpl::LoadSelectionInterface() {
  if (!plugin_selection_interface_) {
    plugin_selection_interface_ =
        static_cast<const PPP_Selection_Dev*>(module_->GetPluginInterface(
            PPP_SELECTION_DEV_INTERFACE));
  }
  return !!plugin_selection_interface_;
}

bool PepperPluginInstanceImpl::LoadTextInputInterface() {
  if (!plugin_textinput_interface_) {
    plugin_textinput_interface_ =
        static_cast<const PPP_TextInput_Dev*>(module_->GetPluginInterface(
            PPP_TEXTINPUT_DEV_INTERFACE));
  }

  return !!plugin_textinput_interface_;
}

bool PepperPluginInstanceImpl::LoadZoomInterface() {
  if (!plugin_zoom_interface_) {
    plugin_zoom_interface_ =
        static_cast<const PPP_Zoom_Dev*>(module_->GetPluginInterface(
            PPP_ZOOM_DEV_INTERFACE));
  }

  return !!plugin_zoom_interface_;
}

void PepperPluginInstanceImpl::UpdateLayerTransform() {
  if (!bound_graphics_2d_platform_ || !texture_layer_) {
    // Currently the transform is only applied for Graphics2D.
    return;
  }
  // Set the UV coordinates of the texture based on the size of the Graphics2D
  // context. By default a texture gets scaled to the size of the layer. But
  // if the size of the Graphics2D context doesn't match the size of the plugin
  // then it will be incorrectly stretched. This also affects how the plugin
  // is painted when it is being resized. If the Graphics2D contents are
  // stretched when a plugin is resized while waiting for a new frame from the
  // plugin to be rendered, then flickering behavior occurs as in
  // crbug.com/353453.
  gfx::SizeF graphics_2d_size_in_dip =
      gfx::ScaleSize(bound_graphics_2d_platform_->Size(),
                     bound_graphics_2d_platform_->GetScale());
  gfx::Size plugin_size_in_dip(view_data_.rect.size.width,
                               view_data_.rect.size.height);

  texture_layer_->SetUV(
      gfx::PointF(0.0f, 0.0f),
      gfx::PointF(
          plugin_size_in_dip.width() / graphics_2d_size_in_dip.width(),
          plugin_size_in_dip.height() / graphics_2d_size_in_dip.height()));
}

bool PepperPluginInstanceImpl::PluginHasFocus() const {
  return flash_fullscreen_ || (has_webkit_focus_ && has_content_area_focus_);
}

void PepperPluginInstanceImpl::SendFocusChangeNotification() {
  // Keep a reference on the stack. RenderViewImpl::PepperFocusChanged may
  // remove the <embed> from the DOM, which will make the PepperWebPluginImpl
  // drop its reference, usually the last one. This is similar to possible
  // plugin behavior described at the NOTE above Delete().
  scoped_refptr<PepperPluginInstanceImpl> ref(this);

  if (!render_frame_)
    return;

  bool has_focus = PluginHasFocus();
  render_frame_->render_view()->PepperFocusChanged(this, has_focus);

  // instance_interface_ may have been cleared in Delete() if the
  // PepperWebPluginImpl is destroyed.
  if (instance_interface_)
    instance_interface_->DidChangeFocus(pp_instance(), PP_FromBool(has_focus));
}

void PepperPluginInstanceImpl::UpdateTouchEventRequest() {
  bool raw_touch = (filtered_input_event_mask_ & PP_INPUTEVENT_CLASS_TOUCH) ||
                   (input_event_mask_ & PP_INPUTEVENT_CLASS_TOUCH);
  container_->requestTouchEventType(raw_touch ?
      blink::WebPluginContainer::TouchEventRequestTypeRaw :
      blink::WebPluginContainer::TouchEventRequestTypeSynthesizedMouse);
}

bool PepperPluginInstanceImpl::IsAcceptingWheelEvents() const {
  return (filtered_input_event_mask_ & PP_INPUTEVENT_CLASS_WHEEL) ||
      (input_event_mask_ & PP_INPUTEVENT_CLASS_WHEEL);
}

void PepperPluginInstanceImpl::ScheduleAsyncDidChangeView() {
  if (view_change_weak_ptr_factory_.HasWeakPtrs())
    return;  // Already scheduled.
  base::MessageLoop::current()->PostTask(
      FROM_HERE,
      base::Bind(&PepperPluginInstanceImpl::SendAsyncDidChangeView,
                 view_change_weak_ptr_factory_.GetWeakPtr()));
}

void PepperPluginInstanceImpl::SendAsyncDidChangeView() {
  // The bound callback that owns the weak pointer is still valid until after
  // this function returns. SendDidChangeView checks HasWeakPtrs, so we need to
  // invalidate them here.
  // NOTE: If we ever want to have more than one pending callback, it should
  // use a different factory, or we should have a different strategy here.
  view_change_weak_ptr_factory_.InvalidateWeakPtrs();
  SendDidChangeView();
}

void PepperPluginInstanceImpl::SendDidChangeView() {
  // Don't send DidChangeView to crashed plugins.
  if (module()->is_crashed())
    return;

  if (view_change_weak_ptr_factory_.HasWeakPtrs() ||
      (sent_initial_did_change_view_ &&
       last_sent_view_data_.Equals(view_data_)))
    return;  // Nothing to update.

  sent_initial_did_change_view_ = true;
  last_sent_view_data_ = view_data_;
  ScopedPPResource resource(
      ScopedPPResource::PassRef(),
      (new PPB_View_Shared(ppapi::OBJECT_IS_IMPL,
                           pp_instance(), view_data_))->GetReference());

  UpdateLayerTransform();

  // It's possible that Delete() has been called but the renderer hasn't
  // released its reference to this object yet.
  if (instance_interface_) {
    instance_interface_->DidChangeView(pp_instance(), resource,
                                       &view_data_.rect,
                                       &view_data_.clip_rect);
  }
}

void PepperPluginInstanceImpl::ReportGeometry() {
  // If this call was delayed, we may have transitioned back to fullscreen in
  // the mean time, so only report the geometry if we are actually in normal
  // mode.
  if (container_ && !fullscreen_container_ && !flash_fullscreen_)
    container_->reportGeometry();
}

bool PepperPluginInstanceImpl::GetPreferredPrintOutputFormat(
    PP_PrintOutputFormat_Dev* format) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (!LoadPrintInterface())
    return false;
  uint32_t supported_formats =
      plugin_print_interface_->QuerySupportedFormats(pp_instance());
  if (supported_formats & PP_PRINTOUTPUTFORMAT_PDF) {
    *format = PP_PRINTOUTPUTFORMAT_PDF;
    return true;
  }
  return false;
}

bool PepperPluginInstanceImpl::SupportsPrintInterface() {
  PP_PrintOutputFormat_Dev format;
  return GetPreferredPrintOutputFormat(&format);
}

bool PepperPluginInstanceImpl::IsPrintScalingDisabled() {
  DCHECK(plugin_print_interface_);
  if (!plugin_print_interface_)
    return false;
  return plugin_print_interface_->IsScalingDisabled(pp_instance()) == PP_TRUE;
}

int PepperPluginInstanceImpl::PrintBegin(const WebPrintParams& print_params) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  PP_PrintOutputFormat_Dev format;
  if (!GetPreferredPrintOutputFormat(&format)) {
    // PrintBegin should not have been called since SupportsPrintInterface
    // would have returned false;
    NOTREACHED();
    return 0;
  }
  int num_pages = 0;
  PP_PrintSettings_Dev print_settings;
  print_settings.printable_area = PP_FromGfxRect(print_params.printableArea);
  print_settings.content_area = PP_FromGfxRect(print_params.printContentArea);
  print_settings.paper_size = PP_FromGfxSize(print_params.paperSize);
  print_settings.dpi = print_params.printerDPI;
  print_settings.orientation = PP_PRINTORIENTATION_NORMAL;
  print_settings.grayscale = PP_FALSE;
  print_settings.print_scaling_option = static_cast<PP_PrintScalingOption_Dev>(
      print_params.printScalingOption);
  print_settings.format = format;
  num_pages = plugin_print_interface_->Begin(pp_instance(),
                                             &print_settings);
  if (!num_pages)
    return 0;
  current_print_settings_ = print_settings;
  canvas_.clear();
  ranges_.clear();
  return num_pages;
}

bool PepperPluginInstanceImpl::PrintPage(int page_number,
                                         blink::WebCanvas* canvas) {
#if defined(ENABLE_FULL_PRINTING)
  DCHECK(plugin_print_interface_);
  PP_PrintPageNumberRange_Dev page_range;
  page_range.first_page_number = page_range.last_page_number = page_number;
  // The canvas only has a metafile on it for print preview.
  bool save_for_later =
      (printing::MetafileSkiaWrapper::GetMetafileFromCanvas(*canvas) != NULL);
#if defined(OS_MACOSX) || defined(OS_WIN)
  save_for_later = save_for_later && skia::IsPreviewMetafile(*canvas);
#endif
  if (save_for_later) {
    ranges_.push_back(page_range);
    canvas_ = skia::SharePtr(canvas);
    return true;
  } else {
    return PrintPageHelper(&page_range, 1, canvas);
  }
#else  // defined(ENABLED_PRINTING)
  return false;
#endif
}

bool PepperPluginInstanceImpl::PrintPageHelper(
    PP_PrintPageNumberRange_Dev* page_ranges,
    int num_ranges,
    blink::WebCanvas* canvas) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  DCHECK(plugin_print_interface_);
  if (!plugin_print_interface_)
    return false;
  PP_Resource print_output = plugin_print_interface_->PrintPages(
      pp_instance(), page_ranges, num_ranges);
  if (!print_output)
    return false;

  bool ret = false;

  if (current_print_settings_.format == PP_PRINTOUTPUTFORMAT_PDF)
    ret = PrintPDFOutput(print_output, canvas);

  // Now we need to release the print output resource.
  PluginModule::GetCore()->ReleaseResource(print_output);

  return ret;
}

void PepperPluginInstanceImpl::PrintEnd() {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  if (!ranges_.empty())
    PrintPageHelper(&(ranges_.front()), ranges_.size(), canvas_.get());
  canvas_.clear();
  ranges_.clear();

  DCHECK(plugin_print_interface_);
  if (plugin_print_interface_)
    plugin_print_interface_->End(pp_instance());

  memset(&current_print_settings_, 0, sizeof(current_print_settings_));
#if defined(OS_MACOSX)
  last_printed_page_ = NULL;
#endif  // defined(OS_MACOSX)
}

bool PepperPluginInstanceImpl::CanRotateView() {
  if (!LoadPdfInterface())
    return false;

  return true;
}

void PepperPluginInstanceImpl::RotateView(WebPlugin::RotationType type) {
  if (!LoadPdfInterface())
    return;
  PP_PrivatePageTransformType transform_type =
      type == WebPlugin::RotationType90Clockwise ?
      PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW :
      PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW;
  plugin_pdf_interface_->Transform(pp_instance(), transform_type);
  // NOTE: plugin instance may have been deleted.
}

bool PepperPluginInstanceImpl::FlashIsFullscreenOrPending() {
  return fullscreen_container_ != NULL;
}

bool PepperPluginInstanceImpl::IsFullscreenOrPending() {
  return desired_fullscreen_state_;
}

bool PepperPluginInstanceImpl::SetFullscreen(bool fullscreen) {
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);

  // Check whether we are trying to switch to the state we're already going
  // to (i.e. if we're already switching to fullscreen but the fullscreen
  // container isn't ready yet, don't do anything more).
  if (fullscreen == IsFullscreenOrPending())
    return false;

  if (!render_frame_)
    return false;
  if (fullscreen &&
      !render_frame_->render_view()->renderer_preferences().
          plugin_fullscreen_allowed)
    return false;

  // Check whether we are trying to switch while the state is in transition.
  // The 2nd request gets dropped while messing up the internal state, so
  // disallow this.
  if (view_data_.is_fullscreen != desired_fullscreen_state_)
    return false;

  if (fullscreen && !IsProcessingUserGesture())
    return false;

  VLOG(1) << "Setting fullscreen to " << (fullscreen ? "on" : "off");
  desired_fullscreen_state_ = fullscreen;

  if (fullscreen) {
    // Create the user gesture in case we're processing one that's pending.
    WebScopedUserGesture user_gesture(CurrentUserGestureToken());
    // WebKit does not resize the plugin to fill the screen in fullscreen mode,
    // so we will tweak plugin's attributes to support the expected behavior.
    KeepSizeAttributesBeforeFullscreen();
    SetSizeAttributesForFullscreen();
    container_->element().requestFullScreen();
  } else {
    container_->element().document().cancelFullScreen();
  }
  return true;
}

void PepperPluginInstanceImpl::UpdateFlashFullscreenState(
    bool flash_fullscreen) {
  bool is_mouselock_pending = TrackedCallback::IsPending(lock_mouse_callback_);

  if (flash_fullscreen == flash_fullscreen_) {
    // Manually clear callback when fullscreen fails with mouselock pending.
    if (!flash_fullscreen && is_mouselock_pending)
      lock_mouse_callback_->Run(PP_ERROR_FAILED);
    return;
  }

  UpdateLayer();

  bool old_plugin_focus = PluginHasFocus();
  flash_fullscreen_ = flash_fullscreen;
  if (is_mouselock_pending && !IsMouseLocked()) {
    if (!IsProcessingUserGesture() &&
        !module_->permissions().HasPermission(
            ppapi::PERMISSION_BYPASS_USER_GESTURE)) {
      lock_mouse_callback_->Run(PP_ERROR_NO_USER_GESTURE);
    } else {
      // Open a user gesture here so the Webkit user gesture checks will succeed
      // for out-of-process plugins.
      WebScopedUserGesture user_gesture(CurrentUserGestureToken());
      if (!LockMouse())
        lock_mouse_callback_->Run(PP_ERROR_FAILED);
    }
  }

  if (PluginHasFocus() != old_plugin_focus)
    SendFocusChangeNotification();
}

bool PepperPluginInstanceImpl::IsViewAccelerated() {
  if (!container_)
    return false;

  WebDocument document = container_->element().document();
  WebFrame* frame = document.frame();
  if (!frame)
    return false;
  WebView* view = frame->view();
  if (!view)
    return false;

  return view->isAcceleratedCompositingActive();
}

bool PepperPluginInstanceImpl::PrintPDFOutput(PP_Resource print_output,
                                              blink::WebCanvas* canvas) {
#if defined(ENABLE_FULL_PRINTING)
  ppapi::thunk::EnterResourceNoLock<PPB_Buffer_API> enter(print_output, true);
  if (enter.failed())
    return false;

  BufferAutoMapper mapper(enter.object());
  if (!mapper.data() || !mapper.size()) {
    NOTREACHED();
    return false;
  }
#if defined(OS_WIN)
  // For Windows, we need the PDF DLL to render the output PDF to a DC.
  HMODULE pdf_module = GetModuleHandle(L"pdf.dll");
  if (!pdf_module)
    return false;
  RenderPDFPageToDCProc render_proc =
      reinterpret_cast<RenderPDFPageToDCProc>(
          GetProcAddress(pdf_module, "RenderPDFPageToDC"));
  if (!render_proc)
    return false;
#endif  // defined(OS_WIN)

  bool ret = false;
#if defined(OS_POSIX) && !defined(OS_ANDROID)
  // On Linux we just set the final bits in the native metafile
  // (NativeMetafile and PreviewMetafile must have compatible formats,
  // i.e. both PDF for this to work).
  printing::Metafile* metafile =
      printing::MetafileSkiaWrapper::GetMetafileFromCanvas(*canvas);
  DCHECK(metafile != NULL);
  if (metafile)
    ret = metafile->InitFromData(mapper.data(), mapper.size());
#elif defined(OS_WIN)
  printing::Metafile* metafile =
    printing::MetafileSkiaWrapper::GetMetafileFromCanvas(*canvas);
  if (metafile) {
    // We only have a metafile when doing print preview, so we just want to
    // pass the PDF off to preview.
    ret = metafile->InitFromData(mapper.data(), mapper.size());
  } else {
    // On Windows, we now need to render the PDF to the DC that backs the
    // supplied canvas.
    HDC dc = skia::BeginPlatformPaint(canvas);
    DrawEmptyRectangle(dc);
    gfx::Size size_in_pixels;
    size_in_pixels.set_width(printing::ConvertUnit(
        current_print_settings_.printable_area.size.width,
        static_cast<int>(printing::kPointsPerInch),
        current_print_settings_.dpi));
    size_in_pixels.set_height(printing::ConvertUnit(
        current_print_settings_.printable_area.size.height,
        static_cast<int>(printing::kPointsPerInch),
        current_print_settings_.dpi));
    // We need to scale down DC to fit an entire page into DC available area.
    // First, we'll try to use default scaling based on the 72dpi that is
    // used in webkit for printing.
    // If default scaling is not enough to fit the entire PDF without
    // Current metafile is based on screen DC and have current screen size.
    // Writing outside of those boundaries will result in the cut-off output.
    // On metafiles (this is the case here), scaling down will still record
    // original coordinates and we'll be able to print in full resolution.
    // Before playback we'll need to counter the scaling up that will happen
    // in the browser (printed_document_win.cc).
    double dynamic_scale = gfx::CalculatePageScale(dc, size_in_pixels.width(),
                                                   size_in_pixels.height());
    double page_scale = static_cast<double>(printing::kPointsPerInch) /
        static_cast<double>(current_print_settings_.dpi);

    if (dynamic_scale < page_scale) {
      page_scale = dynamic_scale;
      printing::MetafileSkiaWrapper::SetCustomScaleOnCanvas(*canvas,
                                                            page_scale);
    }

    gfx::ScaleDC(dc, page_scale);

    ret = render_proc(static_cast<unsigned char*>(mapper.data()), mapper.size(),
                      0, dc, current_print_settings_.dpi,
                      current_print_settings_.dpi, 0, 0, size_in_pixels.width(),
                      size_in_pixels.height(), true, false, true, true, true);
    skia::EndPlatformPaint(canvas);
  }
#endif  // defined(OS_WIN)

  return ret;
#else  // defined(ENABLE_FULL_PRINTING)
  return false;
#endif
}

void PepperPluginInstanceImpl::UpdateLayer() {
  if (!container_)
    return;

  gpu::Mailbox mailbox;
  uint32 sync_point = 0;
  if (bound_graphics_3d_.get()) {
    PlatformContext3D* context = bound_graphics_3d_->platform_context();
    context->GetBackingMailbox(&mailbox, &sync_point);
    DCHECK_EQ(mailbox.IsZero(), sync_point == 0);
  }
  bool want_3d_layer = !mailbox.IsZero();
  bool want_2d_layer = bound_graphics_2d_platform_ &&
                       CommandLine::ForCurrentProcess()->HasSwitch(
                           switches::kEnableSoftwareCompositing);
  bool want_layer = want_3d_layer || want_2d_layer;

  if ((want_layer == !!texture_layer_.get()) &&
      (want_3d_layer == layer_is_hardware_) &&
      layer_bound_to_fullscreen_ == !!fullscreen_container_) {
    UpdateLayerTransform();
    return;
  }

  if (texture_layer_) {
    if (!layer_bound_to_fullscreen_)
      container_->setWebLayer(NULL);
    else if (fullscreen_container_)
      fullscreen_container_->SetLayer(NULL);
    web_layer_.reset();
    texture_layer_ = NULL;
  }
  if (want_layer) {
    bool opaque = false;
    if (want_3d_layer) {
      DCHECK(bound_graphics_3d_.get());
      texture_layer_ = cc::TextureLayer::CreateForMailbox(NULL);
      opaque = bound_graphics_3d_->IsOpaque();
      texture_layer_->SetTextureMailboxWithoutReleaseCallback(
          cc::TextureMailbox(mailbox, GL_TEXTURE_2D, sync_point));
    } else {
      DCHECK(bound_graphics_2d_platform_);
      texture_layer_ = cc::TextureLayer::CreateForMailbox(this);
      bound_graphics_2d_platform_->AttachedToNewLayer();
      opaque = bound_graphics_2d_platform_->IsAlwaysOpaque();
      texture_layer_->SetFlipped(false);
    }
    web_layer_.reset(new webkit::WebLayerImpl(texture_layer_));
    if (fullscreen_container_) {
      fullscreen_container_->SetLayer(web_layer_.get());
      // Ignore transparency in fullscreen, since that's what Flash always
      // wants to do, and that lets it not recreate a context if
      // wmode=transparent was specified.
      texture_layer_->SetContentsOpaque(true);
    } else {
      container_->setWebLayer(web_layer_.get());
      texture_layer_->SetContentsOpaque(opaque);
    }
  }
  layer_bound_to_fullscreen_ = !!fullscreen_container_;
  layer_is_hardware_ = want_3d_layer;
  UpdateLayerTransform();
}

unsigned PepperPluginInstanceImpl::PrepareTexture() {
  return 0;
}

bool PepperPluginInstanceImpl::PrepareTextureMailbox(
    cc::TextureMailbox* mailbox,
    scoped_ptr<cc::SingleReleaseCallback>* release_callback,
    bool use_shared_memory) {
  if (!bound_graphics_2d_platform_)
    return false;
  return bound_graphics_2d_platform_->PrepareTextureMailbox(
      mailbox, release_callback);
}

void PepperPluginInstanceImpl::OnDestruct() {
  render_frame_ = NULL;
}

void PepperPluginInstanceImpl::AddPluginObject(PluginObject* plugin_object) {
  DCHECK(live_plugin_objects_.find(plugin_object) ==
         live_plugin_objects_.end());
  live_plugin_objects_.insert(plugin_object);
}

void PepperPluginInstanceImpl::RemovePluginObject(PluginObject* plugin_object) {
  // Don't actually verify that the object is in the set since during module
  // deletion we'll be in the process of freeing them.
  live_plugin_objects_.erase(plugin_object);
}

bool PepperPluginInstanceImpl::IsProcessingUserGesture() {
  PP_TimeTicks now = ppapi::TimeTicksToPPTimeTicks(base::TimeTicks::Now());
  // Give a lot of slack so tests won't be flaky.
  const PP_TimeTicks kUserGestureDurationInSeconds = 10.0;
  return pending_user_gesture_token_.hasGestures() &&
         (now - pending_user_gesture_ < kUserGestureDurationInSeconds);
}

WebUserGestureToken PepperPluginInstanceImpl::CurrentUserGestureToken() {
  if (!IsProcessingUserGesture())
    pending_user_gesture_token_ = WebUserGestureToken();
  return pending_user_gesture_token_;
}

void PepperPluginInstanceImpl::OnLockMouseACK(bool succeeded) {
  if (TrackedCallback::IsPending(lock_mouse_callback_))
    lock_mouse_callback_->Run(succeeded ? PP_OK : PP_ERROR_FAILED);
}

void PepperPluginInstanceImpl::OnMouseLockLost() {
  if (LoadMouseLockInterface())
    plugin_mouse_lock_interface_->MouseLockLost(pp_instance());
}

void PepperPluginInstanceImpl::HandleMouseLockedInputEvent(
    const blink::WebMouseEvent& event) {
  // |cursor_info| is ignored since it is hidden when the mouse is locked.
  blink::WebCursorInfo cursor_info;
  HandleInputEvent(event, &cursor_info);
}

void PepperPluginInstanceImpl::SimulateInputEvent(
    const InputEventData& input_event) {
  WebView* web_view = container()->element().document().frame()->view();
  if (!web_view) {
    NOTREACHED();
    return;
  }

  bool handled = SimulateIMEEvent(input_event);
  if (handled)
    return;

  std::vector<linked_ptr<WebInputEvent> > events =
      CreateSimulatedWebInputEvents(
          input_event,
          view_data_.rect.point.x + view_data_.rect.size.width / 2,
          view_data_.rect.point.y + view_data_.rect.size.height / 2);
  for (std::vector<linked_ptr<WebInputEvent> >::iterator it = events.begin();
      it != events.end(); ++it) {
    web_view->handleInputEvent(*it->get());
  }
}

bool PepperPluginInstanceImpl::SimulateIMEEvent(
    const InputEventData& input_event) {
  switch (input_event.event_type) {
    case PP_INPUTEVENT_TYPE_IME_COMPOSITION_START:
    case PP_INPUTEVENT_TYPE_IME_COMPOSITION_UPDATE:
      SimulateImeSetCompositionEvent(input_event);
      break;
    case PP_INPUTEVENT_TYPE_IME_COMPOSITION_END:
      DCHECK(input_event.character_text.empty());
      SimulateImeSetCompositionEvent(input_event);
      break;
    case PP_INPUTEVENT_TYPE_IME_TEXT:
      if (!render_frame_)
        return false;
      render_frame_->SimulateImeConfirmComposition(
          base::UTF8ToUTF16(input_event.character_text), gfx::Range());
      break;
    default:
      return false;
  }
  return true;
}

void PepperPluginInstanceImpl::SimulateImeSetCompositionEvent(
    const InputEventData& input_event) {
  if (!render_frame_)
    return;

  std::vector<size_t> offsets;
  offsets.push_back(input_event.composition_selection_start);
  offsets.push_back(input_event.composition_selection_end);
  offsets.insert(offsets.end(),
                 input_event.composition_segment_offsets.begin(),
                 input_event.composition_segment_offsets.end());

  base::string16 utf16_text =
      base::UTF8ToUTF16AndAdjustOffsets(input_event.character_text, &offsets);

  std::vector<blink::WebCompositionUnderline> underlines;
  for (size_t i = 2; i + 1 < offsets.size(); ++i) {
    blink::WebCompositionUnderline underline;
    underline.startOffset = offsets[i];
    underline.endOffset = offsets[i + 1];
    if (input_event.composition_target_segment == static_cast<int32_t>(i - 2))
      underline.thick = true;
    underlines.push_back(underline);
  }

  render_frame_->SimulateImeSetComposition(
      utf16_text, underlines, offsets[0], offsets[1]);
}

ContentDecryptorDelegate*
    PepperPluginInstanceImpl::GetContentDecryptorDelegate() {
  if (content_decryptor_delegate_)
    return content_decryptor_delegate_.get();

  const PPP_ContentDecryptor_Private* plugin_decryption_interface =
      static_cast<const PPP_ContentDecryptor_Private*>(
          module_->GetPluginInterface(
              PPP_CONTENTDECRYPTOR_PRIVATE_INTERFACE));
  if (!plugin_decryption_interface)
    return NULL;

  content_decryptor_delegate_.reset(
      new ContentDecryptorDelegate(pp_instance_, plugin_decryption_interface));
  return content_decryptor_delegate_.get();
}

PP_Bool PepperPluginInstanceImpl::BindGraphics(PP_Instance instance,
                                               PP_Resource device) {
  TRACE_EVENT0("ppapi", "PepperPluginInstanceImpl::BindGraphics");
  // The Graphics3D instance can't be destroyed until we call
  // UpdateLayer().
  scoped_refptr<ppapi::Resource> old_graphics = bound_graphics_3d_.get();
  if (bound_graphics_3d_.get()) {
    bound_graphics_3d_->BindToInstance(false);
    bound_graphics_3d_ = NULL;
  }
  if (bound_graphics_2d_platform_) {
    bound_graphics_2d_platform_->BindToInstance(NULL);
    bound_graphics_2d_platform_ = NULL;
  }

  // Special-case clearing the current device.
  if (!device) {
    UpdateLayer();
    InvalidateRect(gfx::Rect());
    return PP_TRUE;
  }

  // Refuse to bind if in transition to fullscreen with PPB_FlashFullscreen or
  // to/from fullscreen with PPB_Fullscreen.
  if ((fullscreen_container_ && !flash_fullscreen_) ||
      desired_fullscreen_state_ != view_data_.is_fullscreen)
    return PP_FALSE;

  const ppapi::host::PpapiHost* ppapi_host =
      RendererPpapiHost::GetForPPInstance(instance)->GetPpapiHost();
  ppapi::host::ResourceHost* host = ppapi_host->GetResourceHost(device);
  PepperGraphics2DHost* graphics_2d = NULL;
  if (host) {
    if (host->IsGraphics2DHost())
      graphics_2d = static_cast<PepperGraphics2DHost*>(host);
    DLOG_IF(ERROR, !graphics_2d) << "Resource is not PepperGraphics2DHost.";
  }

  EnterResourceNoLock<PPB_Graphics3D_API> enter_3d(device, false);
  PPB_Graphics3D_Impl* graphics_3d = enter_3d.succeeded() ?
      static_cast<PPB_Graphics3D_Impl*>(enter_3d.object()) : NULL;

  if (graphics_2d) {
    if (graphics_2d->BindToInstance(this)) {
      bound_graphics_2d_platform_ = graphics_2d;
      UpdateLayer();
      return PP_TRUE;
    }
  } else if (graphics_3d) {
    // Make sure graphics can only be bound to the instance it is
    // associated with.
    if (graphics_3d->pp_instance() == pp_instance() &&
        graphics_3d->BindToInstance(true)) {
      bound_graphics_3d_ = graphics_3d;
      UpdateLayer();
      return PP_TRUE;
    }
  }

  // The instance cannot be bound or the device is not a valid resource type.
  return PP_FALSE;
}

PP_Bool PepperPluginInstanceImpl::IsFullFrame(PP_Instance instance) {
  return PP_FromBool(full_frame());
}

const ViewData* PepperPluginInstanceImpl::GetViewData(PP_Instance instance) {
  return &view_data_;
}

PP_Bool PepperPluginInstanceImpl::FlashIsFullscreen(PP_Instance instance) {
  return PP_FromBool(flash_fullscreen_);
}

PP_Var PepperPluginInstanceImpl::GetWindowObject(PP_Instance instance) {
  if (!container_)
    return PP_MakeUndefined();

  WebFrame* frame = container_->element().document().frame();
  if (!frame)
    return PP_MakeUndefined();

  return NPObjectToPPVar(this, frame->windowObject());
}

PP_Var PepperPluginInstanceImpl::GetOwnerElementObject(PP_Instance instance) {
  if (!container_)
    return PP_MakeUndefined();
  return NPObjectToPPVar(this, container_->scriptableObjectForElement());
}

PP_Var PepperPluginInstanceImpl::ExecuteScript(PP_Instance instance,
                                               PP_Var script,
                                               PP_Var* exception) {
  // Executing the script may remove the plugin from the DOM, so we need to keep
  // a reference to ourselves so that we can still process the result after the
  // WebBindings::evaluate() below.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);
  TryCatch try_catch(exception);
  if (try_catch.has_exception())
    return PP_MakeUndefined();

  // Convert the script into an inconvenient NPString object.
  StringVar* script_string = StringVar::FromPPVar(script);
  if (!script_string) {
    try_catch.SetException("Script param to ExecuteScript must be a string.");
    return PP_MakeUndefined();
  }
  NPString np_script;
  np_script.UTF8Characters = script_string->value().c_str();
  np_script.UTF8Length = script_string->value().length();

  // Get the current frame to pass to the evaluate function.
  WebFrame* frame = container_->element().document().frame();
  if (!frame) {
    try_catch.SetException("No frame to execute script in.");
    return PP_MakeUndefined();
  }

  NPVariant result;
  bool ok = false;
  if (IsProcessingUserGesture()) {
    blink::WebScopedUserGesture user_gesture(CurrentUserGestureToken());
    ok = WebBindings::evaluate(NULL, frame->windowObject(), &np_script,
                               &result);
  } else {
    ok = WebBindings::evaluate(NULL, frame->windowObject(), &np_script,
                               &result);
  }
  if (!ok) {
    // TryCatch doesn't catch the exceptions properly. Since this is only for
    // a trusted API, just set to a general exception message.
    try_catch.SetException("Exception caught");
    WebBindings::releaseVariantValue(&result);
    return PP_MakeUndefined();
  }

  PP_Var ret = NPVariantToPPVar(this, &result);
  WebBindings::releaseVariantValue(&result);
  return ret;
}

uint32_t PepperPluginInstanceImpl::GetAudioHardwareOutputSampleRate(
    PP_Instance instance) {
  RenderThreadImpl* thread = RenderThreadImpl::current();
  return thread->GetAudioHardwareConfig()->GetOutputSampleRate();
}

uint32_t PepperPluginInstanceImpl::GetAudioHardwareOutputBufferSize(
    PP_Instance instance) {
  RenderThreadImpl* thread = RenderThreadImpl::current();
  return thread->GetAudioHardwareConfig()->GetOutputBufferSize();
}

PP_Var PepperPluginInstanceImpl::GetDefaultCharSet(PP_Instance instance) {
  if (!render_frame_)
    return PP_MakeUndefined();
  return StringVar::StringToPPVar(
      render_frame_->render_view()->webkit_preferences().default_encoding);
}

// These PPB_ContentDecryptor_Private calls are responses to
// PPP_ContentDecryptor_Private calls made on |content_decryptor_delegate_|.
// Therefore, |content_decryptor_delegate_| must have been initialized when
// the following methods are called.
void PepperPluginInstanceImpl::SessionCreated(PP_Instance instance,
                                              uint32_t session_id,
                                              PP_Var web_session_id_var) {
  content_decryptor_delegate_->OnSessionCreated(session_id, web_session_id_var);
}

void PepperPluginInstanceImpl::SessionMessage(PP_Instance instance,
                                              uint32_t session_id,
                                              PP_Var message_var,
                                              PP_Var destination_url) {
  content_decryptor_delegate_->OnSessionMessage(
      session_id, message_var, destination_url);
}

void PepperPluginInstanceImpl::SessionReady(PP_Instance instance,
                                            uint32_t session_id) {
  content_decryptor_delegate_->OnSessionReady(session_id);
}

void PepperPluginInstanceImpl::SessionClosed(PP_Instance instance,
                                             uint32_t session_id) {
  content_decryptor_delegate_->OnSessionClosed(session_id);
}

void PepperPluginInstanceImpl::SessionError(PP_Instance instance,
                                            uint32_t session_id,
                                            int32_t media_error,
                                            uint32_t system_code) {
  content_decryptor_delegate_->OnSessionError(
      session_id, media_error, system_code);
}

void PepperPluginInstanceImpl::DeliverBlock(
    PP_Instance instance,
    PP_Resource decrypted_block,
    const PP_DecryptedBlockInfo* block_info) {
  content_decryptor_delegate_->DeliverBlock(decrypted_block, block_info);
}

void PepperPluginInstanceImpl::DecoderInitializeDone(
    PP_Instance instance,
    PP_DecryptorStreamType decoder_type,
    uint32_t request_id,
    PP_Bool success) {
  content_decryptor_delegate_->DecoderInitializeDone(
      decoder_type, request_id, success);
}

void PepperPluginInstanceImpl::DecoderDeinitializeDone(
    PP_Instance instance,
    PP_DecryptorStreamType decoder_type,
    uint32_t request_id) {
  content_decryptor_delegate_->DecoderDeinitializeDone(decoder_type,
                                                       request_id);
}

void PepperPluginInstanceImpl::DecoderResetDone(
    PP_Instance instance,
    PP_DecryptorStreamType decoder_type,
    uint32_t request_id) {
  content_decryptor_delegate_->DecoderResetDone(decoder_type, request_id);
}


void PepperPluginInstanceImpl::DeliverFrame(
    PP_Instance instance,
    PP_Resource decrypted_frame,
    const PP_DecryptedFrameInfo* frame_info) {
  content_decryptor_delegate_->DeliverFrame(decrypted_frame, frame_info);
}

void PepperPluginInstanceImpl::DeliverSamples(
    PP_Instance instance,
    PP_Resource audio_frames,
    const PP_DecryptedSampleInfo* sample_info) {
  content_decryptor_delegate_->DeliverSamples(audio_frames, sample_info);
}

void PepperPluginInstanceImpl::SetPluginToHandleFindRequests(
    PP_Instance instance) {
  if (!LoadFindInterface())
    return;
  bool is_main_frame = render_frame_ &&
      render_frame_->GetRenderView()->GetMainRenderFrame() == render_frame_;
  if (!is_main_frame)
    return;
  render_frame_->render_view()->set_plugin_find_handler(this);
}

void PepperPluginInstanceImpl::NumberOfFindResultsChanged(
    PP_Instance instance,
    int32_t total,
    PP_Bool final_result) {
  DCHECK_NE(find_identifier_, -1);
  if (render_frame_) {
    render_frame_->reportFindInPageMatchCount(
        find_identifier_, total, PP_ToBool(final_result));
  }
}

void PepperPluginInstanceImpl::SelectedFindResultChanged(PP_Instance instance,
                                                         int32_t index) {
  DCHECK_NE(find_identifier_, -1);
  if (render_frame_) {
    render_frame_->reportFindInPageSelection(
        find_identifier_, index + 1, blink::WebRect());
  }
}

void PepperPluginInstanceImpl::SetTickmarks(PP_Instance instance,
                                            const PP_Rect* tickmarks,
                                            uint32_t count) {
  if (!render_frame_ || !render_frame_->GetWebFrame())
    return;

  blink::WebVector<blink::WebRect> tickmarks_converted(
      static_cast<size_t>(count));
  for (uint32 i = 0; i < count; ++i) {
    tickmarks_converted[i] = blink::WebRect(tickmarks[i].point.x,
                                            tickmarks[i].point.y,
                                            tickmarks[i].size.width,
                                            tickmarks[i].size.height);;
  }
  blink::WebFrame* frame = render_frame_->GetWebFrame();
  frame->setTickmarks(tickmarks_converted);
}

PP_Bool PepperPluginInstanceImpl::IsFullscreen(PP_Instance instance) {
  return PP_FromBool(view_data_.is_fullscreen);
}

PP_Bool PepperPluginInstanceImpl::SetFullscreen(PP_Instance instance,
                                                PP_Bool fullscreen) {
  return PP_FromBool(SetFullscreen(PP_ToBool(fullscreen)));
}

PP_Bool PepperPluginInstanceImpl::GetScreenSize(PP_Instance instance,
                                                PP_Size* size) {
  blink::WebScreenInfo info = render_frame()->GetRenderWidget()->screenInfo();
  *size = PP_MakeSize(info.rect.width, info.rect.height);
  return PP_TRUE;
}

ppapi::Resource* PepperPluginInstanceImpl::GetSingletonResource(
    PP_Instance instance,
    ppapi::SingletonResourceID id) {
  // Flash APIs and some others aren't implemented in-process.
  switch (id) {
    case ppapi::BROKER_SINGLETON_ID:
    case ppapi::BROWSER_FONT_SINGLETON_ID:
    case ppapi::EXTENSIONS_COMMON_SINGLETON_ID:
    case ppapi::FILE_MAPPING_SINGLETON_ID:
    case ppapi::FLASH_CLIPBOARD_SINGLETON_ID:
    case ppapi::FLASH_FILE_SINGLETON_ID:
    case ppapi::FLASH_FULLSCREEN_SINGLETON_ID:
    case ppapi::FLASH_SINGLETON_ID:
    case ppapi::ISOLATED_FILESYSTEM_SINGLETON_ID:
    case ppapi::NETWORK_PROXY_SINGLETON_ID:
    case ppapi::PDF_SINGLETON_ID:
    case ppapi::TRUETYPE_FONT_SINGLETON_ID:
      NOTIMPLEMENTED();
      return NULL;
    case ppapi::GAMEPAD_SINGLETON_ID:
      return gamepad_impl_.get();
    case ppapi::UMA_SINGLETON_ID: {
      if (!uma_private_impl_) {
        RendererPpapiHostImpl* host_impl = module_->renderer_ppapi_host();
        if (host_impl->in_process_router()) {
          uma_private_impl_ = new ppapi::proxy::UMAPrivateResource(
              host_impl->in_process_router()->GetPluginConnection(instance),
              instance);
        }
      }
      return uma_private_impl_.get();
    }
  }

  NOTREACHED();
  return NULL;
}

int32_t PepperPluginInstanceImpl::RequestInputEvents(PP_Instance instance,
                                                     uint32_t event_classes) {
  input_event_mask_ |= event_classes;
  filtered_input_event_mask_ &= ~(event_classes);
  RequestInputEventsHelper(event_classes);
  return ValidateRequestInputEvents(false, event_classes);
}

int32_t PepperPluginInstanceImpl::RequestFilteringInputEvents(
    PP_Instance instance,
    uint32_t event_classes) {
  filtered_input_event_mask_ |= event_classes;
  input_event_mask_ &= ~(event_classes);
  RequestInputEventsHelper(event_classes);
  return ValidateRequestInputEvents(true, event_classes);
}

void PepperPluginInstanceImpl::ClearInputEventRequest(PP_Instance instance,
                                                      uint32_t event_classes) {
  input_event_mask_ &= ~(event_classes);
  filtered_input_event_mask_ &= ~(event_classes);
  RequestInputEventsHelper(event_classes);
}

void PepperPluginInstanceImpl::ZoomChanged(PP_Instance instance,
                                           double factor) {
  // We only want to tell the page to change its zoom if the whole page is the
  // plugin.  If we're in an iframe, then don't do anything.
  if (!IsFullPagePlugin())
    return;
  container()->zoomLevelChanged(content::ZoomFactorToZoomLevel(factor));
}

void PepperPluginInstanceImpl::ZoomLimitsChanged(PP_Instance instance,
                                                 double minimum_factor,
                                                 double maximum_factor) {
  if (!render_frame_)
    return;
  if (minimum_factor > maximum_factor) {
    NOTREACHED();
    return;
  }
  double minimum_level = ZoomFactorToZoomLevel(minimum_factor);
  double maximum_level = ZoomFactorToZoomLevel(maximum_factor);
  render_frame_->render_view()->webview()->zoomLimitsChanged(
      minimum_level, maximum_level);
}

void PepperPluginInstanceImpl::PostMessage(PP_Instance instance,
                                           PP_Var message) {
  message_channel_->PostMessageToJavaScript(message);
}

PP_Bool PepperPluginInstanceImpl::SetCursor(PP_Instance instance,
                                            PP_MouseCursor_Type type,
                                            PP_Resource image,
                                            const PP_Point* hot_spot) {
  if (!ValidateSetCursorParams(type, image, hot_spot))
    return PP_FALSE;

  if (type != PP_MOUSECURSOR_TYPE_CUSTOM) {
    DoSetCursor(new WebCursorInfo(static_cast<WebCursorInfo::Type>(type)));
    return PP_TRUE;
  }

  EnterResourceNoLock<PPB_ImageData_API> enter(image, true);
  if (enter.failed())
    return PP_FALSE;
  PPB_ImageData_Impl* image_data =
      static_cast<PPB_ImageData_Impl*>(enter.object());

  ImageDataAutoMapper auto_mapper(image_data);
  if (!auto_mapper.is_valid())
    return PP_FALSE;

  scoped_ptr<WebCursorInfo> custom_cursor(
      new WebCursorInfo(WebCursorInfo::TypeCustom));
  custom_cursor->hotSpot.x = hot_spot->x;
  custom_cursor->hotSpot.y = hot_spot->y;

  const SkBitmap* bitmap = image_data->GetMappedBitmap();
  // Make a deep copy, so that the cursor remains valid even after the original
  // image data gets freed.
  if (!bitmap->copyTo(&custom_cursor->customImage.getSkBitmap())) {
    return PP_FALSE;
  }

  DoSetCursor(custom_cursor.release());
  return PP_TRUE;
}

int32_t PepperPluginInstanceImpl::LockMouse(
    PP_Instance instance,
    scoped_refptr<TrackedCallback> callback) {
  if (TrackedCallback::IsPending(lock_mouse_callback_))
    return PP_ERROR_INPROGRESS;

  if (IsMouseLocked())
    return PP_OK;

  if (!CanAccessMainFrame())
    return PP_ERROR_NOACCESS;

  if (!IsProcessingUserGesture())
    return PP_ERROR_NO_USER_GESTURE;

  // Attempt mouselock only if Flash isn't waiting on fullscreen, otherwise
  // we wait and call LockMouse() in UpdateFlashFullscreenState().
  if (!FlashIsFullscreenOrPending() || flash_fullscreen_) {
    // Open a user gesture here so the Webkit user gesture checks will succeed
    // for out-of-process plugins.
    WebScopedUserGesture user_gesture(CurrentUserGestureToken());
    if (!LockMouse())
      return PP_ERROR_FAILED;
  }

  // Either mouselock succeeded or a Flash fullscreen is pending.
  lock_mouse_callback_ = callback;
  return PP_OK_COMPLETIONPENDING;
}

void PepperPluginInstanceImpl::UnlockMouse(PP_Instance instance) {
  GetMouseLockDispatcher()->UnlockMouse(GetOrCreateLockTargetAdapter());
}

void PepperPluginInstanceImpl::SetTextInputType(PP_Instance instance,
                                                PP_TextInput_Type type) {
  if (!render_frame_)
    return;
  int itype = type;
  if (itype < 0 || itype > ui::TEXT_INPUT_TYPE_URL)
    itype = ui::TEXT_INPUT_TYPE_NONE;
  text_input_type_ = static_cast<ui::TextInputType>(itype);
  render_frame_->PepperTextInputTypeChanged(this);
}

void PepperPluginInstanceImpl::UpdateCaretPosition(
    PP_Instance instance,
    const PP_Rect& caret,
    const PP_Rect& bounding_box) {
  if (!render_frame_)
    return;
  text_input_caret_ = PP_ToGfxRect(caret);
  text_input_caret_bounds_ = PP_ToGfxRect(bounding_box);
  text_input_caret_set_ = true;
  render_frame_->PepperCaretPositionChanged(this);
}

void PepperPluginInstanceImpl::CancelCompositionText(PP_Instance instance) {
  if (render_frame_)
    render_frame_->PepperCancelComposition(this);
}

void PepperPluginInstanceImpl::SelectionChanged(PP_Instance instance) {
  // TODO(kinaba): currently the browser always calls RequestSurroundingText.
  // It can be optimized so that it won't call it back until the information
  // is really needed.

  // Avoid calling in nested context or else this will reenter the plugin. This
  // uses a weak pointer rather than exploiting the fact that this class is
  // refcounted because we don't actually want this operation to affect the
  // lifetime of the instance.
  base::MessageLoop::current()->PostTask(
      FROM_HERE,
      base::Bind(&PepperPluginInstanceImpl::RequestSurroundingText,
                 weak_factory_.GetWeakPtr(),
                 static_cast<size_t>(kExtraCharsForTextInput)));
}

void PepperPluginInstanceImpl::UpdateSurroundingText(PP_Instance instance,
                                                     const char* text,
                                                     uint32_t caret,
                                                     uint32_t anchor) {
  if (!render_frame_)
    return;
  surrounding_text_ = text;
  selection_caret_ = caret;
  selection_anchor_ = anchor;
  render_frame_->PepperSelectionChanged(this);
}

PP_Var PepperPluginInstanceImpl::ResolveRelativeToDocument(
    PP_Instance instance,
    PP_Var relative,
    PP_URLComponents_Dev* components) {
  StringVar* relative_string = StringVar::FromPPVar(relative);
  if (!relative_string)
    return PP_MakeNull();

  WebElement plugin_element = container()->element();
  GURL document_url = plugin_element.document().baseURL();
  return ppapi::PPB_URLUtil_Shared::GenerateURLReturn(
      document_url.Resolve(relative_string->value()),
      components);
}

PP_Bool PepperPluginInstanceImpl::DocumentCanRequest(PP_Instance instance,
                                                     PP_Var url) {
  StringVar* url_string = StringVar::FromPPVar(url);
  if (!url_string)
    return PP_FALSE;

  blink::WebSecurityOrigin security_origin;
  if (!SecurityOriginForInstance(instance, &security_origin))
    return PP_FALSE;

  GURL gurl(url_string->value());
  if (!gurl.is_valid())
    return PP_FALSE;

  return BoolToPPBool(security_origin.canRequest(gurl));
}

PP_Bool PepperPluginInstanceImpl::DocumentCanAccessDocument(
    PP_Instance instance,
    PP_Instance target) {
  blink::WebSecurityOrigin our_origin;
  if (!SecurityOriginForInstance(instance, &our_origin))
    return PP_FALSE;

  blink::WebSecurityOrigin target_origin;
  if (!SecurityOriginForInstance(instance, &target_origin))
    return PP_FALSE;

  return BoolToPPBool(our_origin.canAccess(target_origin));
}

PP_Var PepperPluginInstanceImpl::GetDocumentURL(
    PP_Instance instance,
    PP_URLComponents_Dev* components) {
  blink::WebDocument document = container()->element().document();
  return ppapi::PPB_URLUtil_Shared::GenerateURLReturn(document.url(),
                                                      components);
}

PP_Var PepperPluginInstanceImpl::GetPluginInstanceURL(
    PP_Instance instance,
    PP_URLComponents_Dev* components) {
  return ppapi::PPB_URLUtil_Shared::GenerateURLReturn(plugin_url_,
                                                      components);
}

PP_Var PepperPluginInstanceImpl::GetPluginReferrerURL(
    PP_Instance instance,
    PP_URLComponents_Dev* components) {
  blink::WebDocument document = container()->element().document();
  if (!full_frame_)
    return ppapi::PPB_URLUtil_Shared::GenerateURLReturn(document.url(),
                                                        components);
  WebFrame* frame = document.frame();
  if (!frame)
    return PP_MakeUndefined();
  const WebURLRequest& request = frame->dataSource()->originalRequest();
  WebString referer = request.httpHeaderField("Referer");
  if (referer.isEmpty())
    return PP_MakeUndefined();
  return ppapi::PPB_URLUtil_Shared::GenerateURLReturn(GURL(referer),
                                                      components);
}

PP_ExternalPluginResult PepperPluginInstanceImpl::ResetAsProxied(
    scoped_refptr<PluginModule> module) {
  // Save the original module and switch over to the new one now that this
  // plugin is using the IPC-based proxy.
  original_module_ = module_;
  module_ = module;

  // Don't send any messages to the plugin until DidCreate() has finished.
  message_channel_->QueueJavaScriptMessages();

  // For NaCl instances, remember the NaCl plugin instance interface, so we
  // can shut it down by calling its DidDestroy in our Delete() method.
  original_instance_interface_.reset(instance_interface_.release());

  base::Callback<const void*(const char*)> get_plugin_interface_func =
      base::Bind(&PluginModule::GetPluginInterface, module_.get());
  PPP_Instance_Combined* ppp_instance_combined =
      PPP_Instance_Combined::Create(get_plugin_interface_func);
  if (!ppp_instance_combined) {
    // The proxy must support at least one usable PPP_Instance interface.
    // While this could be a failure to implement the interface in the NaCl
    // module, it is more likely that the NaCl process has crashed. Either
    // way, report that module initialization failed.
    return PP_EXTERNAL_PLUGIN_ERROR_MODULE;
  }

  instance_interface_.reset(ppp_instance_combined);
  // Clear all PPP interfaces we may have cached.
  plugin_find_interface_ = NULL;
  plugin_input_event_interface_ = NULL;
  checked_for_plugin_input_event_interface_ = false;
  plugin_messaging_interface_ = NULL;
  checked_for_plugin_messaging_interface_ = false;
  plugin_mouse_lock_interface_ = NULL;
  plugin_pdf_interface_ = NULL;
  checked_for_plugin_pdf_interface_ = false;
  plugin_private_interface_ = NULL;
  plugin_selection_interface_ = NULL;
  plugin_textinput_interface_ = NULL;
  plugin_zoom_interface_ = NULL;

  // Re-send the DidCreate event via the proxy.
  scoped_ptr<const char*[]> argn_array(StringVectorToArgArray(argn_));
  scoped_ptr<const char*[]> argv_array(StringVectorToArgArray(argv_));
  if (!instance_interface_->DidCreate(pp_instance(), argn_.size(),
                                      argn_array.get(), argv_array.get()))
    return PP_EXTERNAL_PLUGIN_ERROR_INSTANCE;
  message_channel_->StopQueueingJavaScriptMessages();

  // Clear sent_initial_did_change_view_ and cancel any pending DidChangeView
  // event. This way, SendDidChangeView will send the "current" view
  // immediately (before other events like HandleDocumentLoad).
  sent_initial_did_change_view_ = false;
  view_change_weak_ptr_factory_.InvalidateWeakPtrs();
  SendDidChangeView();

  DCHECK(external_document_load_);
  external_document_load_ = false;
  if (!external_document_response_.isNull()) {
    document_loader_ = NULL;
    // Pass the response to the new proxy.
    HandleDocumentLoad(external_document_response_);
    external_document_response_ = blink::WebURLResponse();
    // Replay any document load events we've received to the real loader.
    external_document_loader_->ReplayReceivedData(document_loader_);
    external_document_loader_.reset(NULL);
  }

  return PP_EXTERNAL_PLUGIN_OK;
}

bool PepperPluginInstanceImpl::IsValidInstanceOf(PluginModule* module) {
  DCHECK(module);
  return module == module_.get() ||
         module == original_module_.get();
}

NPP PepperPluginInstanceImpl::instanceNPP() {
  return npp_.get();
}

PepperPluginInstance* PepperPluginInstance::Get(PP_Instance instance_id) {
  return HostGlobals::Get()->GetInstance(instance_id);
}

RenderView* PepperPluginInstanceImpl::GetRenderView() {
  return render_frame_ ? render_frame_->render_view() : NULL;
}

blink::WebPluginContainer* PepperPluginInstanceImpl::GetContainer() {
  return container_;
}

v8::Isolate* PepperPluginInstanceImpl::GetIsolate() const {
  return isolate_;
}

ppapi::VarTracker* PepperPluginInstanceImpl::GetVarTracker() {
  return HostGlobals::Get()->GetVarTracker();
}

const GURL& PepperPluginInstanceImpl::GetPluginURL() {
  return plugin_url_;
}

base::FilePath PepperPluginInstanceImpl::GetModulePath() {
  return module_->path();
}

PP_Resource PepperPluginInstanceImpl::CreateImage(gfx::ImageSkia* source_image,
                                                  float scale) {
  gfx::ImageSkiaRep image_skia_rep = source_image->GetRepresentation(scale);

  if (image_skia_rep.is_null() || image_skia_rep.scale() != scale)
    return 0;

  scoped_refptr<PPB_ImageData_Impl> image_data(new PPB_ImageData_Impl(
      pp_instance(),
      PPB_ImageData_Impl::PLATFORM));
  if (!image_data->Init(
          PPB_ImageData_Impl::GetNativeImageDataFormat(),
          image_skia_rep.pixel_width(),
          image_skia_rep.pixel_height(),
          false)) {
    return 0;
  }

  ImageDataAutoMapper mapper(image_data.get());
  if (!mapper.is_valid())
    return 0;

  skia::PlatformCanvas* canvas = image_data->GetPlatformCanvas();
  // Note: Do not SkBitmap::copyTo the canvas bitmap directly because it will
  // ignore the allocated pixels in shared memory and re-allocate a new buffer.
  canvas->writePixels(image_skia_rep.sk_bitmap(), 0, 0);

  return image_data->GetReference();
}

PP_ExternalPluginResult PepperPluginInstanceImpl::SwitchToOutOfProcessProxy(
    const base::FilePath& file_path,
    ppapi::PpapiPermissions permissions,
    const IPC::ChannelHandle& channel_handle,
    base::ProcessId plugin_pid,
    int plugin_child_id) {
  // Create a new module for each instance of the external plugin that is using
  // the IPC based out-of-process proxy. We can't use the existing module,
  // because it is configured for the in-process plugin, and we must keep it
  // that way to allow the page to create other instances.
  scoped_refptr<PluginModule> external_plugin_module(
      module_->CreateModuleForExternalPluginInstance());

  RendererPpapiHostImpl* renderer_ppapi_host =
      external_plugin_module->CreateOutOfProcessModule(
          render_frame_,
          file_path,
          permissions,
          channel_handle,
          plugin_pid,
          plugin_child_id,
          true);
  if (!renderer_ppapi_host) {
    DLOG(ERROR) << "CreateExternalPluginModule() failed";
    return PP_EXTERNAL_PLUGIN_ERROR_MODULE;
  }

  // Finally, switch the instance to the proxy.
  return external_plugin_module->InitAsProxiedExternalPlugin(this);
}

void PepperPluginInstanceImpl::SetAlwaysOnTop(bool on_top) {
  always_on_top_ = on_top;
}

void PepperPluginInstanceImpl::DoSetCursor(WebCursorInfo* cursor) {
  cursor_.reset(cursor);
  if (fullscreen_container_) {
    fullscreen_container_->DidChangeCursor(*cursor);
  } else if (render_frame_) {
    render_frame_->PepperDidChangeCursor(this, *cursor);
  }
}

bool PepperPluginInstanceImpl::IsFullPagePlugin() {
  WebFrame* frame = container()->element().document().frame();
  return frame->view()->mainFrame()->document().isPluginDocument();
}

bool PepperPluginInstanceImpl::FlashSetFullscreen(bool fullscreen,
                                                  bool delay_report) {
  TRACE_EVENT0("ppapi", "PepperPluginInstanceImpl::FlashSetFullscreen");
  // Keep a reference on the stack. See NOTE above.
  scoped_refptr<PepperPluginInstanceImpl> ref(this);

  // We check whether we are trying to switch to the state we're already going
  // to (i.e. if we're already switching to fullscreen but the fullscreen
  // container isn't ready yet, don't do anything more).
  if (fullscreen == FlashIsFullscreenOrPending())
    return true;

  if (!render_frame_)
    return false;
  if (fullscreen &&
      !render_frame_->render_view()->renderer_preferences().
          plugin_fullscreen_allowed)
    return false;

  // Unbind current 2D or 3D graphics context.
  VLOG(1) << "Setting fullscreen to " << (fullscreen ? "on" : "off");
  if (fullscreen) {
    DCHECK(!fullscreen_container_);
    fullscreen_container_ =
        render_frame_->CreatePepperFullscreenContainer(this);
    UpdateLayer();
  } else {
    DCHECK(fullscreen_container_);
    fullscreen_container_->Destroy();
    fullscreen_container_ = NULL;
    UpdateFlashFullscreenState(false);
    if (!delay_report) {
      ReportGeometry();
    } else {
      base::MessageLoop::current()->PostTask(
          FROM_HERE,
          base::Bind(&PepperPluginInstanceImpl::ReportGeometry, this));
    }
  }

  return true;
}

bool PepperPluginInstanceImpl::IsRectTopmost(const gfx::Rect& rect) {
  if (flash_fullscreen_)
    return true;

  return container_->isRectTopmost(rect);
}

int32_t PepperPluginInstanceImpl::Navigate(
    const ppapi::URLRequestInfoData& request,
    const char* target,
    bool from_user_action) {
  if (!container_)
    return PP_ERROR_FAILED;

  WebDocument document = container_->element().document();
  WebFrame* frame = document.frame();
  if (!frame)
    return PP_ERROR_FAILED;

  ppapi::URLRequestInfoData completed_request = request;

  WebURLRequest web_request;
  if (!CreateWebURLRequest(pp_instance_,
                           &completed_request,
                           frame,
                           &web_request)) {
    return PP_ERROR_FAILED;
  }
  web_request.setFirstPartyForCookies(document.firstPartyForCookies());
  web_request.setHasUserGesture(from_user_action);

  GURL gurl(web_request.url());
  if (gurl.SchemeIs("javascript")) {
    // In imitation of the NPAPI implementation, only |target_frame == frame| is
    // allowed for security reasons.
    WebFrame* target_frame =
        frame->view()->findFrameByName(WebString::fromUTF8(target), frame);
    if (target_frame != frame)
      return PP_ERROR_NOACCESS;

    // TODO(viettrungluu): NPAPI sends the result back to the plugin -- do we
    // need that?
    WebString result = container_->executeScriptURL(gurl, from_user_action);
    return result.isNull() ? PP_ERROR_FAILED : PP_OK;
  }

  // Only GETs and POSTs are supported.
  if (web_request.httpMethod() != "GET" &&
      web_request.httpMethod() != "POST")
    return PP_ERROR_BADARGUMENT;

  WebString target_str = WebString::fromUTF8(target);
  container_->loadFrameRequest(web_request, target_str, false, NULL);
  return PP_OK;
}

int PepperPluginInstanceImpl::MakePendingFileRefRendererHost(
    const base::FilePath& path) {
  RendererPpapiHostImpl* host_impl = module_->renderer_ppapi_host();
  PepperFileRefRendererHost* file_ref_host(
      new PepperFileRefRendererHost(host_impl, pp_instance(), 0, path));
  return host_impl->GetPpapiHost()->AddPendingResourceHost(
      scoped_ptr<ppapi::host::ResourceHost>(file_ref_host));
}

void PepperPluginInstanceImpl::SetEmbedProperty(PP_Var key,
                                                PP_Var value) {
  message_channel_->SetReadOnlyProperty(key, value);
}

bool PepperPluginInstanceImpl::CanAccessMainFrame() const {
  if (!container_)
    return false;
  blink::WebDocument containing_document = container_->element().document();

  if (!containing_document.frame() ||
      !containing_document.frame()->view() ||
      !containing_document.frame()->view()->mainFrame()) {
    return false;
  }
  blink::WebDocument main_document =
      containing_document.frame()->view()->mainFrame()->document();

  return containing_document.securityOrigin().canAccess(
      main_document.securityOrigin());
}

void PepperPluginInstanceImpl::KeepSizeAttributesBeforeFullscreen() {
  WebElement element = container_->element();
  width_before_fullscreen_ = element.getAttribute(WebString::fromUTF8(kWidth));
  height_before_fullscreen_ =
      element.getAttribute(WebString::fromUTF8(kHeight));
  border_before_fullscreen_ =
      element.getAttribute(WebString::fromUTF8(kBorder));
  style_before_fullscreen_ = element.getAttribute(WebString::fromUTF8(kStyle));
}

void PepperPluginInstanceImpl::SetSizeAttributesForFullscreen() {
  if (!render_frame_)
    return;
  blink::WebScreenInfo info = render_frame_->GetRenderWidget()->screenInfo();
  screen_size_for_fullscreen_ = gfx::Size(info.rect.width, info.rect.height);
  std::string width = StringPrintf("%d", screen_size_for_fullscreen_.width());
  std::string height = StringPrintf("%d", screen_size_for_fullscreen_.height());

  WebElement element = container_->element();
  element.setAttribute(WebString::fromUTF8(kWidth), WebString::fromUTF8(width));
  element.setAttribute(WebString::fromUTF8(kHeight),
                       WebString::fromUTF8(height));
  element.setAttribute(WebString::fromUTF8(kBorder), WebString::fromUTF8("0"));

  // There should be no style settings that matter in fullscreen mode,
  // so just replace them instead of appending.
  // NOTE: "position: fixed" and "display: block" reset the plugin and
  // using %% settings might not work without them (e.g. if the plugin is a
  // child of a container element).
  std::string style;
  style += StringPrintf("width: %s !important; ", width.c_str());
  style += StringPrintf("height: %s !important; ", height.c_str());
  style += "margin: 0 !important; padding: 0 !important; border: 0 !important";
  container_->element().setAttribute(kStyle, WebString::fromUTF8(style));
}

void PepperPluginInstanceImpl::ResetSizeAttributesAfterFullscreen() {
  screen_size_for_fullscreen_ = gfx::Size();
  WebElement element = container_->element();
  element.setAttribute(WebString::fromUTF8(kWidth), width_before_fullscreen_);
  element.setAttribute(WebString::fromUTF8(kHeight), height_before_fullscreen_);
  element.setAttribute(WebString::fromUTF8(kBorder), border_before_fullscreen_);
  element.setAttribute(WebString::fromUTF8(kStyle), style_before_fullscreen_);
}

bool PepperPluginInstanceImpl::IsMouseLocked() {
  return GetMouseLockDispatcher()->IsMouseLockedTo(
      GetOrCreateLockTargetAdapter());
}

bool PepperPluginInstanceImpl::LockMouse() {
  return GetMouseLockDispatcher()->LockMouse(GetOrCreateLockTargetAdapter());
}

MouseLockDispatcher::LockTarget*
    PepperPluginInstanceImpl::GetOrCreateLockTargetAdapter() {
  if (!lock_target_.get()) {
    lock_target_.reset(new PluginInstanceLockTarget(this));
  }
  return lock_target_.get();
}

MouseLockDispatcher* PepperPluginInstanceImpl::GetMouseLockDispatcher() {
  if (flash_fullscreen_) {
    RenderWidgetFullscreenPepper* container =
        static_cast<RenderWidgetFullscreenPepper*>(fullscreen_container_);
    return container->mouse_lock_dispatcher();
  } else if (render_frame_) {
    return render_frame_->render_view()->mouse_lock_dispatcher();
  }
  return NULL;
}

void PepperPluginInstanceImpl::UnSetAndDeleteLockTargetAdapter() {
  if (lock_target_.get()) {
    GetMouseLockDispatcher()->OnLockTargetDestroyed(lock_target_.get());
    lock_target_.reset();
  }
}

void PepperPluginInstanceImpl::DidDataFromWebURLResponse(
    const blink::WebURLResponse& response,
    int pending_host_id,
    const ppapi::URLResponseInfoData& data) {
  RendererPpapiHostImpl* host_impl = module_->renderer_ppapi_host();

  if (host_impl->in_process_router()) {
    // Running in-process, we can just create the resource and call the
    // PPP_Instance function directly.
    scoped_refptr<ppapi::proxy::URLLoaderResource> loader_resource(
        new ppapi::proxy::URLLoaderResource(
            host_impl->in_process_router()->GetPluginConnection(pp_instance()),
            pp_instance(), pending_host_id, data));

    PP_Resource loader_pp_resource = loader_resource->GetReference();
    if (!instance_interface_->HandleDocumentLoad(
            pp_instance(), loader_pp_resource))
      loader_resource->Close();
    // We don't pass a ref into the plugin, if it wants one, it will have taken
    // an additional one.
    ppapi::PpapiGlobals::Get()->GetResourceTracker()->ReleaseResource(
        loader_pp_resource);
  } else {
    // Running out-of-process. Initiate an IPC call to notify the plugin
    // process.
    ppapi::proxy::HostDispatcher* dispatcher =
        ppapi::proxy::HostDispatcher::GetForInstance(pp_instance());
    dispatcher->Send(new PpapiMsg_PPPInstance_HandleDocumentLoad(
        ppapi::API_ID_PPP_INSTANCE, pp_instance(), pending_host_id, data));
  }
}

}  // namespace content
/* [<][>][^][v][top][bottom][index][help] */
root/content/renderer/pepper/pepper_plugin_instance_impl.cc

DEFINITIONS
