root/chrome/browser/ui/browser.cc

DEFINITIONS

1. CreateBrowserWindow
2. IsFastTabUnloadEnabled
3. window
4. window
5. CreateForApp
6. CreateForDevTools
7. browser_
8. DidAttachInterstitialPage
9. DidDetachInterstitialPage
10. translate_driver_observer_
11. GetFindBarController
12. HasFindBarController
13. is_app
14. is_devtools
15. GetCurrentPageIcon
16. GetWindowTitleForCurrentTab
17. FormatTitleForDisplay
18. ShouldCloseWindow
19. CallBeforeUnloadHandlers
20. ResetBeforeUnloadHandlers
21. HasCompletedUnloadProcessing
22. IsAttemptingToCloseBrowser
23. OnWindowClosing
24. InProgressDownloadResponse
25. OkToCloseWithInProgressDownloads
26. WindowFullscreenStateChanged
27. VisibleSSLStateChanged
28. OnWebContentsInstantSupportDisabled
29. ToggleFullscreenModeWithExtension
30. SupportsWindowFeature
31. CanSupportWindowFeature
32. ToggleEncodingAutoDetect
33. OverrideEncoding
34. OpenFile
35. UpdateDownloadShelfVisibility
36. UpdateUIForNavigationInTab
37. OpenURL
38. TabInsertedAt
39. TabClosingAt
40. TabDetachedAt
41. TabDeactivated
42. ActiveTabChanged
43. TabMoved
44. TabReplacedAt
45. TabPinnedStateChanged
46. TabStripEmpty
47. CanOverscrollContent
48. PreHandleKeyboardEvent
49. HandleKeyboardEvent
50. TabsNeedBeforeUnloadFired
51. OverscrollUpdate
52. ShowValidationMessage
53. HideValidationMessage
54. MoveValidationMessage
55. PreHandleGestureEvent
56. IsMouseLocked
57. OnWindowDidShow
58. ShowFirstRunBubble
59. ShowDownload
60. OpenURLFromTab
61. NavigationStateChanged
62. AddNewContents
63. ActivateContents
64. DeactivateContents
65. LoadingStateChanged
66. CloseContents
67. MoveContents
68. IsPopupOrPanel
69. UpdateTargetURL
70. ContentsMouseEvent
71. ContentsZoomChange
72. WebContentsFocused
73. TakeFocus
74. GetRootWindowResizerRect
75. BeforeUnloadFired
76. ShouldFocusLocationBarByDefault
77. SetFocusToLocationBar
78. GetExtraRenderViewHeight
79. ViewSourceForTab
80. ViewSourceForFrame
81. ShowRepostFormWarningDialog
82. ShouldCreateWebContents
83. WebContentsCreated
84. RendererUnresponsive
85. RendererResponsive
86. WorkerCrashed
87. DidNavigateMainFramePostCommit
88. DidNavigateToPendingEntry
89. GetJavaScriptDialogManager
90. OpenColorChooser
91. RunFileChooser
92. EnumerateDirectory
93. EmbedsFullscreenWidget
94. ToggleFullscreenModeForTab
95. IsFullscreenForTabOrPending
96. RegisterProtocolHandler
97. UpdatePreferredSize
98. ResizeDueToAutoResize
99. FindReply
100. RequestToLockMouse
101. LostMouseLock
102. RequestMediaAccessPermission
103. RequestPpapiBrokerPermission
104. GetSizeForNewRenderView
105. SwapTabContents
106. CanReloadContents
107. CanSaveContents
108. ConfirmAddSearchProvider
109. SetWebContentsBlocked
110. GetWebContentsModalDialogHost
111. URLStarredChanged
112. OnZoomChanged
113. FileSelected
114. FileSelectedWithExtraInfo
115. Observe
116. OnDevToolsDisabledChanged
117. UpdateToolbar
118. ScheduleUIUpdate
119. ProcessPendingUIUpdates
120. RemoveScheduledUpdatesFor
121. GetStatusBubble
122. SyncHistoryWithTabs
123. CanCloseWithInProgressDownloads
124. SetAsDelegate
125. CloseFrame
126. TabDetachedAtImpl
127. ShouldShowLocationBar
128. SupportsWindowFeatureImpl
129. UpdateBookmarkBarState
130. ShouldHideUIForFullscreen
131. MaybeCreateBackgroundContents

// Copyright 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 "chrome/browser/ui/browser.h"

#if defined(OS_WIN)
#include <windows.h>
#include <shellapi.h>
#endif  // defined(OS_WIN)

#include <algorithm>
#include <string>

#include "base/base_paths.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/logging.h"
#include "base/metrics/histogram.h"
#include "base/path_service.h"
#include "base/prefs/pref_service.h"
#include "base/process/process_info.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/thread.h"
#include "base/threading/thread_restrictions.h"
#include "base/time/time.h"
#include "chrome/app/chrome_command_ids.h"
#include "chrome/browser/app_mode/app_mode_utils.h"
#include "chrome/browser/autofill/personal_data_manager_factory.h"
#include "chrome/browser/background/background_contents_service.h"
#include "chrome/browser/background/background_contents_service_factory.h"
#include "chrome/browser/bookmarks/bookmark_model.h"
#include "chrome/browser/bookmarks/bookmark_utils.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/browser_shutdown.h"
#include "chrome/browser/character_encoding.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/chrome_page_zoom.h"
#include "chrome/browser/content_settings/host_content_settings_map.h"
#include "chrome/browser/content_settings/tab_specific_content_settings.h"
#include "chrome/browser/custom_handlers/protocol_handler_registry.h"
#include "chrome/browser/custom_handlers/protocol_handler_registry_factory.h"
#include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
#include "chrome/browser/custom_handlers/register_protocol_handler_permission_request.h"
#include "chrome/browser/defaults.h"
#include "chrome/browser/devtools/devtools_toggle_action.h"
#include "chrome/browser/devtools/devtools_window.h"
#include "chrome/browser/download/download_item_model.h"
#include "chrome/browser/download/download_service.h"
#include "chrome/browser/download/download_service_factory.h"
#include "chrome/browser/download/download_shelf.h"
#include "chrome/browser/extensions/browser_extension_window_controller.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/tab_helper.h"
#include "chrome/browser/favicon/favicon_tab_helper.h"
#include "chrome/browser/file_select_helper.h"
#include "chrome/browser/first_run/first_run.h"
#include "chrome/browser/google/google_url_tracker.h"
#include "chrome/browser/infobars/infobar_service.h"
#include "chrome/browser/infobars/simple_alert_infobar_delegate.h"
#include "chrome/browser/lifetime/application_lifetime.h"
#include "chrome/browser/notifications/notification_ui_manager.h"
#include "chrome/browser/pepper_broker_infobar_delegate.h"
#include "chrome/browser/prefs/incognito_mode_prefs.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_destroyer.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/profiles/profile_metrics.h"
#include "chrome/browser/repost_form_warning_controller.h"
#include "chrome/browser/search/search.h"
#include "chrome/browser/sessions/session_service.h"
#include "chrome/browser/sessions/session_service_factory.h"
#include "chrome/browser/sessions/session_tab_helper.h"
#include "chrome/browser/sessions/session_types.h"
#include "chrome/browser/sessions/tab_restore_service.h"
#include "chrome/browser/sessions/tab_restore_service_factory.h"
#include "chrome/browser/sync/profile_sync_service.h"
#include "chrome/browser/sync/profile_sync_service_factory.h"
#include "chrome/browser/sync/sync_ui_util.h"
#include "chrome/browser/tab_contents/background_contents.h"
#include "chrome/browser/tab_contents/retargeting_details.h"
#include "chrome/browser/tab_contents/tab_util.h"
#include "chrome/browser/themes/theme_service.h"
#include "chrome/browser/themes/theme_service_factory.h"
#include "chrome/browser/translate/translate_tab_helper.h"
#include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_manager.h"
#include "chrome/browser/ui/autofill/tab_autofill_manager_delegate.h"
#include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
#include "chrome/browser/ui/bookmarks/bookmark_tab_helper.h"
#include "chrome/browser/ui/bookmarks/bookmark_utils.h"
#include "chrome/browser/ui/browser_command_controller.h"
#include "chrome/browser/ui/browser_commands.h"
#include "chrome/browser/ui/browser_content_setting_bubble_model_delegate.h"
#include "chrome/browser/ui/browser_content_translate_driver_observer.h"
#include "chrome/browser/ui/browser_dialogs.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/browser_instant_controller.h"
#include "chrome/browser/ui/browser_iterator.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/browser_navigator.h"
#include "chrome/browser/ui/browser_tab_restore_service_delegate.h"
#include "chrome/browser/ui/browser_tab_strip_model_delegate.h"
#include "chrome/browser/ui/browser_tabstrip.h"
#include "chrome/browser/ui/browser_toolbar_model_delegate.h"
#include "chrome/browser/ui/browser_ui_prefs.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/chrome_pages.h"
#include "chrome/browser/ui/chrome_select_file_policy.h"
#include "chrome/browser/ui/fast_unload_controller.h"
#include "chrome/browser/ui/find_bar/find_bar.h"
#include "chrome/browser/ui/find_bar/find_bar_controller.h"
#include "chrome/browser/ui/find_bar/find_tab_helper.h"
#include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
#include "chrome/browser/ui/global_error/global_error.h"
#include "chrome/browser/ui/global_error/global_error_service.h"
#include "chrome/browser/ui/global_error/global_error_service_factory.h"
#include "chrome/browser/ui/media_utils.h"
#include "chrome/browser/ui/omnibox/location_bar.h"
#include "chrome/browser/ui/search/search_delegate.h"
#include "chrome/browser/ui/search/search_model.h"
#include "chrome/browser/ui/search/search_tab_helper.h"
#include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
#include "chrome/browser/ui/singleton_tabs.h"
#include "chrome/browser/ui/status_bubble.h"
#include "chrome/browser/ui/sync/browser_synced_window_delegate.h"
#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
#include "chrome/browser/ui/tab_helpers.h"
#include "chrome/browser/ui/tab_modal_confirm_dialog.h"
#include "chrome/browser/ui/tabs/tab_menu_model.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/toolbar/toolbar_model_impl.h"
#include "chrome/browser/ui/unload_controller.h"
#include "chrome/browser/ui/validation_message_bubble.h"
#include "chrome/browser/ui/website_settings/permission_bubble_manager.h"
#include "chrome/browser/ui/webui/signin/login_ui_service.h"
#include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
#include "chrome/browser/ui/window_sizer/window_sizer.h"
#include "chrome/browser/ui/zoom/zoom_controller.h"
#include "chrome/browser/upgrade_detector.h"
#include "chrome/browser/web_applications/web_app.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/custom_handlers/protocol_handler.h"
#include "chrome/common/net/url_fixer_upper.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/profiling.h"
#include "chrome/common/search_types.h"
#include "chrome/common/url_constants.h"
#include "components/startup_metric_utils/startup_metric_utils.h"
#include "components/web_modal/web_contents_modal_dialog_manager.h"
#include "content/public/browser/devtools_manager.h"
#include "content/public/browser/download_item.h"
#include "content/public/browser/download_manager.h"
#include "content/public/browser/interstitial_page.h"
#include "content/public/browser/invalidate_type.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/plugin_service.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/user_metrics.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_view.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/page_zoom.h"
#include "content/public/common/renderer_preferences.h"
#include "content/public/common/webplugininfo.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_system.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "extensions/common/manifest_handlers/background_info.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "grit/locale_settings.h"
#include "grit/theme_resources.h"
#include "net/base/net_util.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
#include "net/cookies/cookie_monster.h"
#include "net/url_request/url_request_context.h"
#include "third_party/WebKit/public/web/WebWindowFeatures.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/window_open_disposition.h"
#include "ui/gfx/point.h"
#include "ui/shell_dialogs/selected_file_info.h"

#if defined(OS_WIN)
#include "base/win/metro.h"
#include "chrome/browser/ssl/ssl_error_info.h"
#include "chrome/browser/task_manager/task_manager.h"
#include "chrome/browser/ui/view_ids.h"
#include "components/autofill/core/browser/autofill_ie_toolbar_import_win.h"
#include "ui/base/win/shell.h"
#endif  // OS_WIN

#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/drive/file_system_util.h"
#endif

#if defined(USE_ASH)
#include "ash/ash_switches.h"
#endif

using base::TimeDelta;
using base::UserMetricsAction;
using content::NativeWebKeyboardEvent;
using content::NavigationController;
using content::NavigationEntry;
using content::OpenURLParams;
using content::PluginService;
using content::Referrer;
using content::RenderWidgetHostView;
using content::SiteInstance;
using content::WebContents;
using extensions::Extension;
using ui::WebDialogDelegate;
using web_modal::WebContentsModalDialogManager;
using blink::WebWindowFeatures;

///////////////////////////////////////////////////////////////////////////////

namespace {

// How long we wait before updating the browser chrome while loading a page.
const int kUIUpdateCoalescingTimeMS = 200;

BrowserWindow* CreateBrowserWindow(Browser* browser) {
  return BrowserWindow::CreateBrowserWindow(browser);
}

// Is the fast tab unload experiment enabled?
bool IsFastTabUnloadEnabled() {
  return CommandLine::ForCurrentProcess()->HasSwitch(
        switches::kEnableFastUnload);
}

}  // namespace

////////////////////////////////////////////////////////////////////////////////
// Browser, CreateParams:

Browser::CreateParams::CreateParams(Profile* profile,
                                    chrome::HostDesktopType host_desktop_type)
    : type(TYPE_TABBED),
      profile(profile),
      host_desktop_type(host_desktop_type),
      app_type(APP_TYPE_HOST),
      initial_show_state(ui::SHOW_STATE_DEFAULT),
      is_session_restore(false),
      window(NULL) {
}

Browser::CreateParams::CreateParams(Type type,
                                    Profile* profile,
                                    chrome::HostDesktopType host_desktop_type)
    : type(type),
      profile(profile),
      host_desktop_type(host_desktop_type),
      app_type(APP_TYPE_HOST),
      initial_show_state(ui::SHOW_STATE_DEFAULT),
      is_session_restore(false),
      window(NULL) {
}

// static
Browser::CreateParams Browser::CreateParams::CreateForApp(
    Type type,
    const std::string& app_name,
    const gfx::Rect& window_bounds,
    Profile* profile,
    chrome::HostDesktopType host_desktop_type) {
  DCHECK(type != TYPE_TABBED);
  DCHECK(!app_name.empty());

  CreateParams params(type, profile, host_desktop_type);
  params.app_name = app_name;
  params.app_type = APP_TYPE_CHILD;
  params.initial_bounds = window_bounds;

  return params;
}

// static
Browser::CreateParams Browser::CreateParams::CreateForDevTools(
    Profile* profile,
    chrome::HostDesktopType host_desktop_type) {
  CreateParams params(TYPE_POPUP, profile, host_desktop_type);
  params.app_name = DevToolsWindow::kDevToolsApp;
  return params;
}

////////////////////////////////////////////////////////////////////////////////
// Browser, InterstitialObserver:

class Browser::InterstitialObserver : public content::WebContentsObserver {
 public:
  InterstitialObserver(Browser* browser, content::WebContents* web_contents)
      : WebContentsObserver(web_contents),
        browser_(browser) {
  }

  using content::WebContentsObserver::web_contents;

  virtual void DidAttachInterstitialPage() OVERRIDE {
    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
  }

  virtual void DidDetachInterstitialPage() OVERRIDE {
    browser_->UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
  }

 private:
  Browser* browser_;

  DISALLOW_COPY_AND_ASSIGN(InterstitialObserver);
};

///////////////////////////////////////////////////////////////////////////////
// Browser, Constructors, Creation, Showing:

Browser::Browser(const CreateParams& params)
    : type_(params.type),
      profile_(params.profile),
      window_(NULL),
      tab_strip_model_delegate_(new chrome::BrowserTabStripModelDelegate(this)),
      tab_strip_model_(new TabStripModel(tab_strip_model_delegate_.get(),
                                         params.profile)),
      app_name_(params.app_name),
      app_type_(params.app_type),
      cancel_download_confirmation_state_(NOT_PROMPTED),
      override_bounds_(params.initial_bounds),
      initial_show_state_(params.initial_show_state),
      is_session_restore_(params.is_session_restore),
      host_desktop_type_(BrowserWindow::AdjustHostDesktopType(
          params.host_desktop_type)),
      content_setting_bubble_model_delegate_(
          new BrowserContentSettingBubbleModelDelegate(this)),
      toolbar_model_delegate_(new BrowserToolbarModelDelegate(this)),
      tab_restore_service_delegate_(new BrowserTabRestoreServiceDelegate(this)),
      synced_window_delegate_(new BrowserSyncedWindowDelegate(this)),
      bookmark_bar_state_(BookmarkBar::HIDDEN),
      command_controller_(new chrome::BrowserCommandController(
          this, g_browser_process->profile_manager())),
      window_has_shown_(false),
      chrome_updater_factory_(this),
      weak_factory_(this),
      translate_driver_observer_(
          new BrowserContentTranslateDriverObserver(this)) {
  // If this causes a crash then a window is being opened using a profile type
  // that is disallowed by policy. The crash prevents the disabled window type
  // from opening at all, but the path that triggered it should be fixed.
  CHECK(IncognitoModePrefs::CanOpenBrowser(profile_));
  CHECK(!profile_->IsGuestSession() || profile_->IsOffTheRecord())
      << "Only off the record browser may be opened in guest mode";

  // TODO(jeremy): Move to initializer list once flag is removed.
  if (IsFastTabUnloadEnabled())
    fast_unload_controller_.reset(new chrome::FastUnloadController(this));
  else
    unload_controller_.reset(new chrome::UnloadController(this));

  if (!app_name_.empty())
    chrome::RegisterAppPrefs(app_name_, profile_);
  tab_strip_model_->AddObserver(this);

  toolbar_model_.reset(new ToolbarModelImpl(toolbar_model_delegate_.get()));
  search_model_.reset(new SearchModel());
  search_delegate_.reset(new SearchDelegate(search_model_.get()));

  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
                 content::Source<Profile>(profile_->GetOriginalProfile()));
  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
                 content::Source<Profile>(profile_->GetOriginalProfile()));
  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
                 content::Source<Profile>(profile_->GetOriginalProfile()));
  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
                 content::NotificationService::AllSources());
#if defined(ENABLE_THEMES)
  registrar_.Add(
      this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
      content::Source<ThemeService>(
          ThemeServiceFactory::GetForProfile(profile_)));
#endif
  registrar_.Add(this, chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
                 content::NotificationService::AllSources());

  profile_pref_registrar_.Init(profile_->GetPrefs());
  profile_pref_registrar_.Add(
      prefs::kDevToolsDisabled,
      base::Bind(&Browser::OnDevToolsDisabledChanged, base::Unretained(this)));
  profile_pref_registrar_.Add(
      prefs::kShowBookmarkBar,
      base::Bind(&Browser::UpdateBookmarkBarState, base::Unretained(this),
                 BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE));

  BrowserList::AddBrowser(this);

  // NOTE: These prefs all need to be explicitly destroyed in the destructor
  // or you'll get a nasty surprise when you run the incognito tests.
  encoding_auto_detect_.Init(prefs::kWebKitUsesUniversalDetector,
                             profile_->GetPrefs());

  if (chrome::IsInstantExtendedAPIEnabled() && is_type_tabbed())
    instant_controller_.reset(new BrowserInstantController(this));

  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_INIT);

  ProfileMetrics::LogProfileLaunch(profile_);

  window_ = params.window ? params.window : CreateBrowserWindow(this);

  // Create the extension window controller before sending notifications.
  extension_window_controller_.reset(
      new BrowserExtensionWindowController(this));

  SessionService* session_service =
      SessionServiceFactory::GetForProfileForSessionRestore(profile_);
  if (session_service)
    session_service->WindowOpened(this);

  // TODO(beng): Move BrowserList::AddBrowser() to the end of this function and
  //             replace uses of this with BL's notifications.
  content::NotificationService::current()->Notify(
      chrome::NOTIFICATION_BROWSER_WINDOW_READY,
      content::Source<Browser>(this),
      content::NotificationService::NoDetails());

  // TODO(beng): move to ChromeBrowserMain:
  if (first_run::ShouldDoPersonalDataManagerFirstRun()) {
#if defined(OS_WIN)
    // Notify PDM that this is a first run.
    ImportAutofillDataWin(
        autofill::PersonalDataManagerFactory::GetForProfile(profile_));
#endif  // defined(OS_WIN)
  }

  fullscreen_controller_.reset(new FullscreenController(this));
}

Browser::~Browser() {
  // The tab strip should not have any tabs at this point.
  DCHECK(tab_strip_model_->empty());
  tab_strip_model_->RemoveObserver(this);

  // Destroy the BrowserCommandController before removing the browser, so that
  // it doesn't act on any notifications that are sent as a result of removing
  // the browser.
  command_controller_.reset();
  BrowserList::RemoveBrowser(this);

  SessionService* session_service =
      SessionServiceFactory::GetForProfile(profile_);
  if (session_service)
    session_service->WindowClosed(session_id_);

  TabRestoreService* tab_restore_service =
      TabRestoreServiceFactory::GetForProfile(profile());
  if (tab_restore_service)
    tab_restore_service->BrowserClosed(tab_restore_service_delegate());

#if !defined(OS_MACOSX)
  if (!chrome::GetTotalBrowserCountForProfile(profile_)) {
    // We're the last browser window with this profile. We need to nuke the
    // TabRestoreService, which will start the shutdown of the
    // NavigationControllers and allow for proper shutdown. If we don't do this
    // chrome won't shutdown cleanly, and may end up crashing when some
    // thread tries to use the IO thread (or another thread) that is no longer
    // valid.
    // This isn't a valid assumption for Mac OS, as it stays running after
    // the last browser has closed. The Mac equivalent is in its app
    // controller.
    TabRestoreServiceFactory::ResetForProfile(profile_);
  }
#endif

  profile_pref_registrar_.RemoveAll();

  encoding_auto_detect_.Destroy();

  // Destroy BrowserExtensionWindowController before the incognito profile
  // is destroyed to make sure the chrome.windows.onRemoved event is sent.
  extension_window_controller_.reset();

  // Destroy BrowserInstantController before the incongnito profile is destroyed
  // because the InstantController destructor depends on this profile.
  instant_controller_.reset();

  if (profile_->IsOffTheRecord() &&
      !BrowserList::IsOffTheRecordSessionActiveForProfile(profile_)) {
    // An incognito profile is no longer needed, this indirectly frees
    // its cache and cookies once it gets destroyed at the appropriate time.
    ProfileDestroyer::DestroyProfileWhenAppropriate(profile_);
  }

  // There may be pending file dialogs, we need to tell them that we've gone
  // away so they don't try and call back to us.
  if (select_file_dialog_.get())
    select_file_dialog_->ListenerDestroyed();

  int num_downloads;
  if (OkToCloseWithInProgressDownloads(&num_downloads) ==
          DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
      !browser_defaults::kBrowserAliveWithNoWindows) {
    DownloadService::CancelAllDownloads();
  }
}

///////////////////////////////////////////////////////////////////////////////
// Getters & Setters

FindBarController* Browser::GetFindBarController() {
  if (!find_bar_controller_.get()) {
    FindBar* find_bar = window_->CreateFindBar();
    find_bar_controller_.reset(new FindBarController(find_bar));
    find_bar->SetFindBarController(find_bar_controller_.get());
    find_bar_controller_->ChangeWebContents(
        tab_strip_model_->GetActiveWebContents());
    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
  }
  return find_bar_controller_.get();
}

bool Browser::HasFindBarController() const {
  return find_bar_controller_.get() != NULL;
}

bool Browser::is_app() const {
  return !app_name_.empty();
}

bool Browser::is_devtools() const {
  return app_name_ == DevToolsWindow::kDevToolsApp;
}

///////////////////////////////////////////////////////////////////////////////
// Browser, State Storage and Retrieval for UI:

gfx::Image Browser::GetCurrentPageIcon() const {
  WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
  // |web_contents| can be NULL since GetCurrentPageIcon() is called by the
  // window during the window's creation (before tabs have been added).
  FaviconTabHelper* favicon_tab_helper =
      web_contents ? FaviconTabHelper::FromWebContents(web_contents) : NULL;
  return favicon_tab_helper ? favicon_tab_helper->GetFavicon() : gfx::Image();
}

base::string16 Browser::GetWindowTitleForCurrentTab() const {
  WebContents* contents = tab_strip_model_->GetActiveWebContents();
  base::string16 title;

  // |contents| can be NULL because GetWindowTitleForCurrentTab is called by the
  // window during the window's creation (before tabs have been added).
  if (contents) {
    title = contents->GetTitle();
    FormatTitleForDisplay(&title);
  }
  if (title.empty())
    title = CoreTabHelper::GetDefaultTitle();

#if defined(OS_MACOSX)
  // On Mac, we don't want to suffix the page title with
  // the application name.
  return title;
#elif defined(USE_ASH)
  // On Ash, we don't want to suffix the page title with the application name,
  // but on Windows, where USE_ASH can also be true, we still want the prefix
  // on desktop.
  if (host_desktop_type() == chrome::HOST_DESKTOP_TYPE_ASH)
    return title;
#endif
  // Don't append the app name to window titles on app frames and app popups
  return is_app() ?
      title :
      l10n_util::GetStringFUTF16(IDS_BROWSER_WINDOW_TITLE_FORMAT, title);
}

// static
void Browser::FormatTitleForDisplay(base::string16* title) {
  size_t current_index = 0;
  size_t match_index;
  while ((match_index = title->find(L'\n', current_index)) !=
         base::string16::npos) {
    title->replace(match_index, 1, base::string16());
    current_index = match_index;
  }
}

///////////////////////////////////////////////////////////////////////////////
// Browser, OnBeforeUnload handling:

bool Browser::ShouldCloseWindow() {
  if (!CanCloseWithInProgressDownloads())
    return false;

  if (IsFastTabUnloadEnabled())
    return fast_unload_controller_->ShouldCloseWindow();
  return unload_controller_->ShouldCloseWindow();
}

bool Browser::CallBeforeUnloadHandlers(
    const base::Callback<void(bool)>& on_close_confirmed) {
  cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
  if (IsFastTabUnloadEnabled()) {
    return fast_unload_controller_->CallBeforeUnloadHandlers(
        on_close_confirmed);
  }
  return unload_controller_->CallBeforeUnloadHandlers(on_close_confirmed);
}

void Browser::ResetBeforeUnloadHandlers() {
  cancel_download_confirmation_state_ = NOT_PROMPTED;
  if (IsFastTabUnloadEnabled())
    fast_unload_controller_->ResetBeforeUnloadHandlers();
  else
    unload_controller_->ResetBeforeUnloadHandlers();
}

bool Browser::HasCompletedUnloadProcessing() const {
  DCHECK(IsFastTabUnloadEnabled());
  return fast_unload_controller_->HasCompletedUnloadProcessing();
}

bool Browser::IsAttemptingToCloseBrowser() const {
  if (IsFastTabUnloadEnabled())
    return fast_unload_controller_->is_attempting_to_close_browser();
  return unload_controller_->is_attempting_to_close_browser();
}

void Browser::OnWindowClosing() {
  if (!ShouldCloseWindow())
    return;

  // Application should shutdown on last window close if the user is explicitly
  // trying to quit, or if there is nothing keeping the browser alive (such as
  // AppController on the Mac, or BackgroundContentsService for background
  // pages).
  bool should_quit_if_last_browser =
      browser_shutdown::IsTryingToQuit() || !chrome::WillKeepAlive();

  if (should_quit_if_last_browser && chrome::ShouldStartShutdown(this))
    browser_shutdown::OnShutdownStarting(browser_shutdown::WINDOW_CLOSE);

  // Don't use GetForProfileIfExisting here, we want to force creation of the
  // session service so that user can restore what was open.
  SessionService* session_service =
      SessionServiceFactory::GetForProfile(profile());
  if (session_service)
    session_service->WindowClosing(session_id());

  TabRestoreService* tab_restore_service =
      TabRestoreServiceFactory::GetForProfile(profile());

#if defined(USE_AURA)
  if (tab_restore_service && is_app() && !is_devtools())
    tab_restore_service->BrowserClosing(tab_restore_service_delegate());
#endif

  if (tab_restore_service && is_type_tabbed() && tab_strip_model_->count())
    tab_restore_service->BrowserClosing(tab_restore_service_delegate());

  // TODO(sky): convert session/tab restore to use notification.
  content::NotificationService::current()->Notify(
      chrome::NOTIFICATION_BROWSER_CLOSING,
      content::Source<Browser>(this),
      content::NotificationService::NoDetails());

  if (!IsFastTabUnloadEnabled())
    tab_strip_model_->CloseAllTabs();
}

////////////////////////////////////////////////////////////////////////////////
// In-progress download termination handling:

void Browser::InProgressDownloadResponse(bool cancel_downloads) {
  if (cancel_downloads) {
    cancel_download_confirmation_state_ = RESPONSE_RECEIVED;
    chrome::CloseWindow(this);
    return;
  }

  // Sets the confirmation state to NOT_PROMPTED so that if the user tries to
  // close again we'll show the warning again.
  cancel_download_confirmation_state_ = NOT_PROMPTED;

  // Show the download page so the user can figure-out what downloads are still
  // in-progress.
  chrome::ShowDownloads(this);

  // Reset UnloadController::is_attempting_to_close_browser_ so that we don't
  // prompt every time any tab is closed. http://crbug.com/305516
  if (IsFastTabUnloadEnabled())
    fast_unload_controller_->CancelWindowClose();
  else
    unload_controller_->CancelWindowClose();
}

Browser::DownloadClosePreventionType Browser::OkToCloseWithInProgressDownloads(
    int* num_downloads_blocking) const {
  DCHECK(num_downloads_blocking);
  *num_downloads_blocking = 0;

  // If we're not running a full browser process with a profile manager
  // (testing), it's ok to close the browser.
  if (!g_browser_process->profile_manager())
    return DOWNLOAD_CLOSE_OK;

  int total_download_count =
      DownloadService::NonMaliciousDownloadCountAllProfiles();
  if (total_download_count == 0)
    return DOWNLOAD_CLOSE_OK;   // No downloads; can definitely close.

  // Figure out how many windows are open total, and associated with this
  // profile, that are relevant for the ok-to-close decision.
  int profile_window_count = 0;
  int total_window_count = 0;
  for (chrome::BrowserIterator it; !it.done(); it.Next()) {
    // Don't count this browser window or any other in the process of closing.
    Browser* const browser = *it;
    // Window closing may be delayed, and windows that are in the process of
    // closing don't count against our totals.
    if (browser == this || browser->IsAttemptingToCloseBrowser())
      continue;

    if (it->profile() == profile())
      profile_window_count++;
    total_window_count++;
  }

  // If there aren't any other windows, we're at browser shutdown,
  // which would cancel all current downloads.
  if (total_window_count == 0) {
    *num_downloads_blocking = total_download_count;
    return DOWNLOAD_CLOSE_BROWSER_SHUTDOWN;
  }

  // If there aren't any other windows on our profile, and we're an incognito
  // profile, and there are downloads associated with that profile,
  // those downloads would be cancelled by our window (-> profile) close.
  DownloadService* download_service =
      DownloadServiceFactory::GetForBrowserContext(profile());
  if ((profile_window_count == 0) &&
      (download_service->NonMaliciousDownloadCount() > 0) &&
      profile()->IsOffTheRecord()) {
    *num_downloads_blocking = download_service->NonMaliciousDownloadCount();
    return DOWNLOAD_CLOSE_LAST_WINDOW_IN_INCOGNITO_PROFILE;
  }

  // Those are the only conditions under which we will block shutdown.
  return DOWNLOAD_CLOSE_OK;
}

////////////////////////////////////////////////////////////////////////////////
// Browser, Tab adding/showing functions:

void Browser::WindowFullscreenStateChanged() {
  fullscreen_controller_->WindowFullscreenStateChanged();
  command_controller_->FullscreenStateChanged();
  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TOGGLE_FULLSCREEN);
}

void Browser::VisibleSSLStateChanged(content::WebContents* web_contents) {
  // When the current tab's SSL state changes, we need to update the URL
  // bar to reflect the new state.
  DCHECK(web_contents);
  if (tab_strip_model_->GetActiveWebContents() == web_contents)
    UpdateToolbar(false);
}

void Browser::OnWebContentsInstantSupportDisabled(
    const content::WebContents* web_contents) {
  DCHECK(web_contents);
  if (tab_strip_model_->GetActiveWebContents() == web_contents)
    UpdateToolbar(false);
}

///////////////////////////////////////////////////////////////////////////////
// Browser, Assorted browser commands:

void Browser::ToggleFullscreenModeWithExtension(const GURL& extension_url) {
  fullscreen_controller_->
      ToggleBrowserFullscreenModeWithExtension(extension_url);
}

bool Browser::SupportsWindowFeature(WindowFeature feature) const {
  return SupportsWindowFeatureImpl(feature, true);
}

bool Browser::CanSupportWindowFeature(WindowFeature feature) const {
  return SupportsWindowFeatureImpl(feature, false);
}

void Browser::ToggleEncodingAutoDetect() {
  content::RecordAction(UserMetricsAction("AutoDetectChange"));
  encoding_auto_detect_.SetValue(!encoding_auto_detect_.GetValue());
  // If "auto detect" is turned on, then any current override encoding
  // is cleared. This also implicitly performs a reload.
  // OTOH, if "auto detect" is turned off, we don't change the currently
  // active encoding.
  if (encoding_auto_detect_.GetValue()) {
    WebContents* contents = tab_strip_model_->GetActiveWebContents();
    if (contents)
      contents->ResetOverrideEncoding();
  }
}

void Browser::OverrideEncoding(int encoding_id) {
  content::RecordAction(UserMetricsAction("OverrideEncoding"));
  const std::string selected_encoding =
      CharacterEncoding::GetCanonicalEncodingNameByCommandId(encoding_id);
  WebContents* contents = tab_strip_model_->GetActiveWebContents();
  if (!selected_encoding.empty() && contents)
     contents->SetOverrideEncoding(selected_encoding);
  // Update the list of recently selected encodings.
  std::string new_selected_encoding_list;
  if (CharacterEncoding::UpdateRecentlySelectedEncoding(
        profile_->GetPrefs()->GetString(prefs::kRecentlySelectedEncoding),
        encoding_id,
        &new_selected_encoding_list)) {
    profile_->GetPrefs()->SetString(prefs::kRecentlySelectedEncoding,
                                    new_selected_encoding_list);
  }
}

void Browser::OpenFile() {
  content::RecordAction(UserMetricsAction("OpenFile"));
  select_file_dialog_ = ui::SelectFileDialog::Create(
      this, new ChromeSelectFilePolicy(
          tab_strip_model_->GetActiveWebContents()));

  const base::FilePath directory = profile_->last_selected_directory();

  // TODO(beng): figure out how to juggle this.
  gfx::NativeWindow parent_window = window_->GetNativeWindow();
  ui::SelectFileDialog::FileTypeInfo file_types;
  file_types.support_drive = true;
  select_file_dialog_->SelectFile(ui::SelectFileDialog::SELECT_OPEN_FILE,
                                  base::string16(),
                                  directory,
                                  &file_types,
                                  0,
                                  base::FilePath::StringType(),
                                  parent_window,
                                  NULL);
}

void Browser::UpdateDownloadShelfVisibility(bool visible) {
  if (GetStatusBubble())
    GetStatusBubble()->UpdateDownloadShelfVisibility(visible);
}

///////////////////////////////////////////////////////////////////////////////

void Browser::UpdateUIForNavigationInTab(WebContents* contents,
                                         content::PageTransition transition,
                                         bool user_initiated) {
  tab_strip_model_->TabNavigating(contents, transition);

  bool contents_is_selected =
      contents == tab_strip_model_->GetActiveWebContents();
  if (user_initiated && contents_is_selected && window()->GetLocationBar()) {
    // Forcibly reset the location bar if the url is going to change in the
    // current tab, since otherwise it won't discard any ongoing user edits,
    // since it doesn't realize this is a user-initiated action.
    window()->GetLocationBar()->Revert();
  }

  if (GetStatusBubble())
    GetStatusBubble()->Hide();

  // Update the location bar. This is synchronous. We specifically don't
  // update the load state since the load hasn't started yet and updating it
  // will put it out of sync with the actual state like whether we're
  // displaying a favicon, which controls the throbber. If we updated it here,
  // the throbber will show the default favicon for a split second when
  // navigating away from the new tab page.
  ScheduleUIUpdate(contents, content::INVALIDATE_TYPE_URL);

  if (contents_is_selected)
    contents->GetView()->SetInitialFocus();
}

///////////////////////////////////////////////////////////////////////////////
// Browser, PageNavigator implementation:

WebContents* Browser::OpenURL(const OpenURLParams& params) {
  return OpenURLFromTab(NULL, params);
}

///////////////////////////////////////////////////////////////////////////////
// Browser, TabStripModelObserver implementation:

void Browser::TabInsertedAt(WebContents* contents,
                            int index,
                            bool foreground) {
  SetAsDelegate(contents, this);
  SessionTabHelper* session_tab_helper =
      SessionTabHelper::FromWebContents(contents);
  session_tab_helper->SetWindowID(session_id());

  content::NotificationService::current()->Notify(
      chrome::NOTIFICATION_TAB_PARENTED,
      content::Source<content::WebContents>(contents),
      content::NotificationService::NoDetails());

  SyncHistoryWithTabs(index);

  // Make sure the loading state is updated correctly, otherwise the throbber
  // won't start if the page is loading.
  LoadingStateChanged(contents, true);

  interstitial_observers_.push_back(new InterstitialObserver(this, contents));

  SessionService* session_service =
      SessionServiceFactory::GetForProfile(profile_);
  if (session_service) {
    session_service->TabInserted(contents);
    int new_active_index = tab_strip_model_->active_index();
    if (index < new_active_index)
      session_service->SetSelectedTabInWindow(session_id(),
                                              new_active_index);
  }
}

void Browser::TabClosingAt(TabStripModel* tab_strip_model,
                           WebContents* contents,
                           int index) {
  fullscreen_controller_->OnTabClosing(contents);
  SessionService* session_service =
      SessionServiceFactory::GetForProfile(profile_);
  if (session_service)
    session_service->TabClosing(contents);
  content::NotificationService::current()->Notify(
      chrome::NOTIFICATION_TAB_CLOSING,
      content::Source<NavigationController>(&contents->GetController()),
      content::NotificationService::NoDetails());

  // Sever the WebContents' connection back to us.
  SetAsDelegate(contents, NULL);
}

void Browser::TabDetachedAt(WebContents* contents, int index) {
  // TabDetachedAt is called before TabStripModel has updated the
  // active index.
  int old_active_index = tab_strip_model_->active_index();
  if (index < old_active_index && !tab_strip_model_->closing_all()) {
    SessionService* session_service =
        SessionServiceFactory::GetForProfileIfExisting(profile_);
    if (session_service)
      session_service->SetSelectedTabInWindow(session_id(),
                                              old_active_index - 1);
  }
  TabDetachedAtImpl(contents, index, DETACH_TYPE_DETACH);
}

void Browser::TabDeactivated(WebContents* contents) {
  fullscreen_controller_->OnTabDeactivated(contents);
  search_delegate_->OnTabDeactivated(contents);
  SearchTabHelper::FromWebContents(contents)->OnTabDeactivated();

  // Save what the user's currently typing, so it can be restored when we
  // switch back to this tab.
  window_->GetLocationBar()->SaveStateToContents(contents);

  if (instant_controller_)
    instant_controller_->TabDeactivated(contents);
}

void Browser::ActiveTabChanged(WebContents* old_contents,
                               WebContents* new_contents,
                               int index,
                               int reason) {
  content::RecordAction(UserMetricsAction("ActiveTabChanged"));

  // Update the bookmark state, since the BrowserWindow may query it during
  // OnActiveTabChanged() below.
  UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH);

  // Let the BrowserWindow do its handling.  On e.g. views this changes the
  // focused object, which should happen before we update the toolbar below,
  // since the omnibox expects the correct element to already be focused when it
  // is updated.
  window_->OnActiveTabChanged(old_contents, new_contents, index, reason);

  fullscreen_controller_->OnTabDetachedFromView(old_contents);

  // Discarded tabs always get reloaded.
  if (tab_strip_model_->IsTabDiscarded(index)) {
    LOG(WARNING) << "Reloading discarded tab at " << index;
    static int reload_count = 0;
    UMA_HISTOGRAM_CUSTOM_COUNTS(
        "Tabs.Discard.ReloadCount", ++reload_count, 1, 1000, 50);
    chrome::Reload(this, CURRENT_TAB);
  }

  // If we have any update pending, do it now.
  if (chrome_updater_factory_.HasWeakPtrs() && old_contents)
    ProcessPendingUIUpdates();

  // Propagate the profile to the location bar.
  UpdateToolbar((reason & CHANGE_REASON_REPLACED) == 0);

  if (chrome::IsInstantExtendedAPIEnabled())
    search_delegate_->OnTabActivated(new_contents);

  // Update reload/stop state.
  command_controller_->LoadingStateChanged(new_contents->IsLoading(), true);

  // Update commands to reflect current state.
  command_controller_->TabStateChanged();

  // Reset the status bubble.
  StatusBubble* status_bubble = GetStatusBubble();
  if (status_bubble) {
    status_bubble->Hide();

    // Show the loading state (if any).
    status_bubble->SetStatus(CoreTabHelper::FromWebContents(
        tab_strip_model_->GetActiveWebContents())->GetStatusText());
  }

  if (HasFindBarController()) {
    find_bar_controller_->ChangeWebContents(new_contents);
    find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect(), true);
  }

  // Update sessions. Don't force creation of sessions. If sessions doesn't
  // exist, the change will be picked up by sessions when created.
  SessionService* session_service =
      SessionServiceFactory::GetForProfileIfExisting(profile_);
  if (session_service && !tab_strip_model_->closing_all()) {
    session_service->SetSelectedTabInWindow(session_id(),
                                            tab_strip_model_->active_index());
  }

  // This needs to be called after notifying SearchDelegate.
  if (instant_controller_)
    instant_controller_->ActiveTabChanged();

  autofill::TabAutofillManagerDelegate::FromWebContents(new_contents)->
      TabActivated();
  SearchTabHelper::FromWebContents(new_contents)->OnTabActivated();
}

void Browser::TabMoved(WebContents* contents,
                       int from_index,
                       int to_index) {
  DCHECK(from_index >= 0 && to_index >= 0);
  // Notify the history service.
  SyncHistoryWithTabs(std::min(from_index, to_index));
}

void Browser::TabReplacedAt(TabStripModel* tab_strip_model,
                            WebContents* old_contents,
                            WebContents* new_contents,
                            int index) {
  TabDetachedAtImpl(old_contents, index, DETACH_TYPE_REPLACE);
  fullscreen_controller_->OnTabClosing(old_contents);
  SessionService* session_service =
      SessionServiceFactory::GetForProfile(profile_);
  if (session_service)
    session_service->TabClosing(old_contents);
  TabInsertedAt(new_contents,
                index,
                (index == tab_strip_model_->active_index()));

  int entry_count = new_contents->GetController().GetEntryCount();
  if (entry_count > 0) {
    // Send out notification so that observers are updated appropriately.
    new_contents->GetController().NotifyEntryChanged(
        new_contents->GetController().GetEntryAtIndex(entry_count - 1),
        entry_count - 1);
  }

  if (session_service) {
    // The new_contents may end up with a different navigation stack. Force
    // the session service to update itself.
    session_service->TabRestored(new_contents,
                                 tab_strip_model_->IsTabPinned(index));
  }
}

void Browser::TabPinnedStateChanged(WebContents* contents, int index) {
  SessionService* session_service =
      SessionServiceFactory::GetForProfileIfExisting(profile());
  if (session_service) {
    SessionTabHelper* session_tab_helper =
        SessionTabHelper::FromWebContents(contents);
    session_service->SetPinnedState(session_id(),
                                    session_tab_helper->session_id(),
                                    tab_strip_model_->IsTabPinned(index));
  }
}

void Browser::TabStripEmpty() {
  // Close the frame after we return to the message loop (not immediately,
  // otherwise it will destroy this object before the stack has a chance to
  // cleanly unwind.)
  // Note: This will be called several times if TabStripEmpty is called several
  //       times. This is because it does not close the window if tabs are
  //       still present.
  base::MessageLoop::current()->PostTask(
      FROM_HERE, base::Bind(&Browser::CloseFrame, weak_factory_.GetWeakPtr()));

  // Instant may have visible WebContents that need to be detached before the
  // window system closes.
  instant_controller_.reset();
}

bool Browser::CanOverscrollContent() const {
#if defined(USE_AURA)
  const std::string value = CommandLine::ForCurrentProcess()->
      GetSwitchValueASCII(switches::kOverscrollHistoryNavigation);
  bool overscroll_enabled = value != "0";
  if (!overscroll_enabled)
    return false;
  if (is_app() || is_devtools() || !is_type_tabbed())
    return false;

  // The detached bookmark bar has appearance of floating above the
  // web-contents. This does not play nicely with overscroll navigation
  // gestures. So disable overscroll navigation when the bookmark bar is in the
  // detached state and the overscroll effect moves the layers.
  if (value == "1" && bookmark_bar_state_ == BookmarkBar::DETACHED)
    return false;
  return true;
#else
  return false;
#endif
}

bool Browser::PreHandleKeyboardEvent(content::WebContents* source,
                                     const NativeWebKeyboardEvent& event,
                                     bool* is_keyboard_shortcut) {
  // Escape exits tabbed fullscreen mode.
  // TODO(koz): Write a test for this http://crbug.com/100441.
  if (event.windowsKeyCode == 27 &&
      fullscreen_controller_->HandleUserPressedEscape()) {
    return true;
  }
  return window()->PreHandleKeyboardEvent(event, is_keyboard_shortcut);
}

void Browser::HandleKeyboardEvent(content::WebContents* source,
                                  const NativeWebKeyboardEvent& event) {
  window()->HandleKeyboardEvent(event);
}

bool Browser::TabsNeedBeforeUnloadFired() {
  if (IsFastTabUnloadEnabled())
    return fast_unload_controller_->TabsNeedBeforeUnloadFired();
  return unload_controller_->TabsNeedBeforeUnloadFired();
}

void Browser::OverscrollUpdate(int delta_y) {
  window_->OverscrollUpdate(delta_y);
}

void Browser::ShowValidationMessage(content::WebContents* web_contents,
                                    const gfx::Rect& anchor_in_root_view,
                                    const base::string16& main_text,
                                    const base::string16& sub_text) {
  RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
  if (rwhv) {
    validation_message_bubble_ =
        chrome::ValidationMessageBubble::CreateAndShow(
            rwhv->GetRenderWidgetHost(),
            anchor_in_root_view,
            main_text,
            sub_text);
  }
}

void Browser::HideValidationMessage(content::WebContents* web_contents) {
  validation_message_bubble_.reset();
}

void Browser::MoveValidationMessage(content::WebContents* web_contents,
                                    const gfx::Rect& anchor_in_root_view) {
  if (!validation_message_bubble_)
    return;
  RenderWidgetHostView* rwhv = web_contents->GetRenderWidgetHostView();
  if (rwhv) {
    validation_message_bubble_->SetPositionRelativeToAnchor(
        rwhv->GetRenderWidgetHost(), anchor_in_root_view);
  }
}

bool Browser::PreHandleGestureEvent(content::WebContents* source,
                                    const blink::WebGestureEvent& event) {
  // Disable pinch zooming in undocked dev tools window due to poor UX.
  if (app_name() == DevToolsWindow::kDevToolsApp)
    return event.type == blink::WebGestureEvent::GesturePinchBegin ||
           event.type == blink::WebGestureEvent::GesturePinchUpdate ||
           event.type == blink::WebGestureEvent::GesturePinchEnd;

  return false;
}

bool Browser::IsMouseLocked() const {
  return fullscreen_controller_->IsMouseLocked();
}

void Browser::OnWindowDidShow() {
  if (window_has_shown_)
    return;
  window_has_shown_ = true;

// CurrentProcessInfo::CreationTime() is missing on some platforms.
#if defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)
  // Measure the latency from startup till the first browser window becomes
  // visible.
  static bool is_first_browser_window = true;
  if (is_first_browser_window &&
      !startup_metric_utils::WasNonBrowserUIDisplayed()) {
    is_first_browser_window = false;
    const base::Time process_creation_time =
        base::CurrentProcessInfo::CreationTime();

    if (!process_creation_time.is_null()) {
      UMA_HISTOGRAM_LONG_TIMES(
          "Startup.BrowserWindowDisplay",
          base::Time::Now() - process_creation_time);
    }
  }
#endif  // defined(OS_MACOSX) || defined(OS_WIN) || defined(OS_LINUX)

  // Nothing to do for non-tabbed windows.
  if (!is_type_tabbed())
    return;

  // Show any pending global error bubble.
  GlobalErrorService* service =
      GlobalErrorServiceFactory::GetForProfile(profile());
  GlobalError* error = service->GetFirstGlobalErrorWithBubbleView();
  if (error)
    error->ShowBubbleView(this);
}

void Browser::ShowFirstRunBubble() {
  window()->GetLocationBar()->ShowFirstRunBubble();
}

void Browser::ShowDownload(content::DownloadItem* download) {
  if (!window())
    return;

  // If the download occurs in a new tab, and it's not a save page
  // download (started before initial navigation completed) close it.
  WebContents* source = download->GetWebContents();
  if (source && source->GetController().IsInitialNavigation() &&
      tab_strip_model_->count() > 1 && !download->IsSavePackageDownload()) {
    CloseContents(source);
  }

  // Some (app downloads) are not supposed to appear on the shelf.
  if (!DownloadItemModel(download).ShouldShowInShelf())
    return;

  // GetDownloadShelf creates the download shelf if it was not yet created.
  DownloadShelf* shelf = window()->GetDownloadShelf();
  shelf->AddDownload(download);
}

///////////////////////////////////////////////////////////////////////////////
// Browser, content::WebContentsDelegate implementation:

WebContents* Browser::OpenURLFromTab(WebContents* source,
                                     const OpenURLParams& params) {
  chrome::NavigateParams nav_params(this, params.url, params.transition);
  FillNavigateParamsFromOpenURLParams(&nav_params, params);
  nav_params.source_contents = source;
  nav_params.tabstrip_add_types = TabStripModel::ADD_NONE;
  nav_params.window_action = chrome::NavigateParams::SHOW_WINDOW;
  nav_params.user_gesture = params.user_gesture;

  PopupBlockerTabHelper* popup_blocker_helper = NULL;
  if (source)
    popup_blocker_helper = PopupBlockerTabHelper::FromWebContents(source);

  if (popup_blocker_helper) {
    if ((params.disposition == NEW_POPUP ||
         params.disposition == NEW_FOREGROUND_TAB ||
         params.disposition == NEW_BACKGROUND_TAB ||
         params.disposition == NEW_WINDOW) &&
        !params.user_gesture && !CommandLine::ForCurrentProcess()->HasSwitch(
                                    switches::kDisablePopupBlocking)) {
      if (popup_blocker_helper->MaybeBlockPopup(nav_params,
                                                WebWindowFeatures())) {
        return NULL;
      }
    }
  }

  chrome::Navigate(&nav_params);

  return nav_params.target_contents;
}

void Browser::NavigationStateChanged(const WebContents* source,
                                     unsigned changed_flags) {
  // Only update the UI when something visible has changed.
  if (changed_flags)
    ScheduleUIUpdate(source, changed_flags);

  // We can synchronously update commands since they will only change once per
  // navigation, so we don't have to worry about flickering. We do, however,
  // need to update the command state early on load to always present usable
  // actions in the face of slow-to-commit pages.
  if (changed_flags & (content::INVALIDATE_TYPE_URL |
                       content::INVALIDATE_TYPE_LOAD))
    command_controller_->TabStateChanged();
}

void Browser::AddNewContents(WebContents* source,
                             WebContents* new_contents,
                             WindowOpenDisposition disposition,
                             const gfx::Rect& initial_pos,
                             bool user_gesture,
                             bool* was_blocked) {
  chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
                         user_gesture, was_blocked);
}

void Browser::ActivateContents(WebContents* contents) {
  tab_strip_model_->ActivateTabAt(
      tab_strip_model_->GetIndexOfWebContents(contents), false);
  window_->Activate();
}

void Browser::DeactivateContents(WebContents* contents) {
  window_->Deactivate();
}

void Browser::LoadingStateChanged(WebContents* source,
    bool to_different_document) {
  window_->UpdateLoadingAnimations(tab_strip_model_->TabsAreLoading());
  window_->UpdateTitleBar();

  WebContents* selected_contents = tab_strip_model_->GetActiveWebContents();
  if (source == selected_contents) {
    bool is_loading = source->IsLoading() && to_different_document;
    command_controller_->LoadingStateChanged(is_loading, false);
    if (GetStatusBubble()) {
      GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
          tab_strip_model_->GetActiveWebContents())->GetStatusText());
    }
  }
}

void Browser::CloseContents(WebContents* source) {
  bool can_close_contents;
  if (IsFastTabUnloadEnabled())
    can_close_contents = fast_unload_controller_->CanCloseContents(source);
  else
    can_close_contents = unload_controller_->CanCloseContents(source);

  if (can_close_contents)
    chrome::CloseWebContents(this, source, true);
}

void Browser::MoveContents(WebContents* source, const gfx::Rect& pos) {
  if (!IsPopupOrPanel(source)) {
    NOTREACHED() << "moving invalid browser type";
    return;
  }
  window_->SetBounds(pos);
}

bool Browser::IsPopupOrPanel(const WebContents* source) const {
  return is_type_popup();
}

void Browser::UpdateTargetURL(WebContents* source, int32 page_id,
                              const GURL& url) {
  if (!GetStatusBubble())
    return;

  if (source == tab_strip_model_->GetActiveWebContents()) {
    PrefService* prefs = profile_->GetPrefs();
    GetStatusBubble()->SetURL(url, prefs->GetString(prefs::kAcceptLanguages));
  }
}

void Browser::ContentsMouseEvent(
    WebContents* source, const gfx::Point& location, bool motion) {
  if (!GetStatusBubble())
    return;

  if (source == tab_strip_model_->GetActiveWebContents()) {
    GetStatusBubble()->MouseMoved(location, !motion);
    if (!motion)
      GetStatusBubble()->SetURL(GURL(), std::string());
  }
}

void Browser::ContentsZoomChange(bool zoom_in) {
  chrome::ExecuteCommand(this, zoom_in ? IDC_ZOOM_PLUS : IDC_ZOOM_MINUS);
}

void Browser::WebContentsFocused(WebContents* contents) {
  window_->WebContentsFocused(contents);
}

bool Browser::TakeFocus(content::WebContents* source,
                        bool reverse) {
  content::NotificationService::current()->Notify(
      chrome::NOTIFICATION_FOCUS_RETURNED_TO_BROWSER,
      content::Source<Browser>(this),
      content::NotificationService::NoDetails());
  return false;
}

gfx::Rect Browser::GetRootWindowResizerRect() const {
  return window_->GetRootWindowResizerRect();
}

void Browser::BeforeUnloadFired(WebContents* web_contents,
                                bool proceed,
                                bool* proceed_to_fire_unload) {
  if (is_devtools() && DevToolsWindow::HandleBeforeUnload(web_contents,
        proceed, proceed_to_fire_unload))
    return;

  if (IsFastTabUnloadEnabled()) {
    *proceed_to_fire_unload =
        fast_unload_controller_->BeforeUnloadFired(web_contents, proceed);
  } else {
    *proceed_to_fire_unload =
        unload_controller_->BeforeUnloadFired(web_contents, proceed);
  }
}

bool Browser::ShouldFocusLocationBarByDefault(WebContents* source) {
  const content::NavigationEntry* entry =
      source->GetController().GetActiveEntry();
  if (entry) {
    GURL url = entry->GetURL();
    GURL virtual_url = entry->GetVirtualURL();
    if ((url.SchemeIs(content::kChromeUIScheme) &&
        url.host() == chrome::kChromeUINewTabHost) ||
        (virtual_url.SchemeIs(content::kChromeUIScheme) &&
        virtual_url.host() == chrome::kChromeUINewTabHost)) {
      return true;
    }
  }

  return chrome::NavEntryIsInstantNTP(source, entry);
}

void Browser::SetFocusToLocationBar(bool select_all) {
  // Two differences between this and FocusLocationBar():
  // (1) This doesn't get recorded in user metrics, since it's called
  //     internally.
  // (2) This checks whether the location bar can be focused, and if not, clears
  //     the focus.  FocusLocationBar() is only reached when the location bar is
  //     focusable, but this may be reached at other times, e.g. while in
  //     fullscreen mode, where we need to leave focus in a consistent state.
  window_->SetFocusToLocationBar(select_all);
}

int Browser::GetExtraRenderViewHeight() const {
  return window_->GetExtraRenderViewHeight();
}

void Browser::ViewSourceForTab(WebContents* source, const GURL& page_url) {
  DCHECK(source);
  chrome::ViewSource(this, source);
}

void Browser::ViewSourceForFrame(WebContents* source,
                                 const GURL& frame_url,
                                 const content::PageState& frame_page_state) {
  DCHECK(source);
  chrome::ViewSource(this, source, frame_url, frame_page_state);
}

void Browser::ShowRepostFormWarningDialog(WebContents* source) {
  TabModalConfirmDialog::Create(new RepostFormWarningController(source),
                                source);
}

bool Browser::ShouldCreateWebContents(
    WebContents* web_contents,
    int route_id,
    WindowContainerType window_container_type,
    const base::string16& frame_name,
    const GURL& target_url,
    const std::string& partition_id,
    content::SessionStorageNamespace* session_storage_namespace) {
  if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
    // If a BackgroundContents is created, suppress the normal WebContents.
    return !MaybeCreateBackgroundContents(route_id,
                                          web_contents,
                                          frame_name,
                                          target_url,
                                          partition_id,
                                          session_storage_namespace);
  }

  return true;
}

void Browser::WebContentsCreated(WebContents* source_contents,
                                 int opener_render_frame_id,
                                 const base::string16& frame_name,
                                 const GURL& target_url,
                                 WebContents* new_contents) {
  // Adopt the WebContents now, so all observers are in place, as the network
  // requests for its initial navigation will start immediately. The WebContents
  // will later be inserted into this browser using Browser::Navigate via
  // AddNewContents.
  TabHelpers::AttachTabHelpers(new_contents);

  // Notify.
  RetargetingDetails details;
  details.source_web_contents = source_contents;
  details.source_render_frame_id = opener_render_frame_id;
  details.target_url = target_url;
  details.target_web_contents = new_contents;
  details.not_yet_in_tabstrip = true;
  content::NotificationService::current()->Notify(
      chrome::NOTIFICATION_RETARGETING,
      content::Source<Profile>(profile_),
      content::Details<RetargetingDetails>(&details));
}

void Browser::RendererUnresponsive(WebContents* source) {
  // Ignore hangs if a tab is blocked.
  int index = tab_strip_model_->GetIndexOfWebContents(source);
  DCHECK_NE(TabStripModel::kNoTab, index);
  if (tab_strip_model_->IsTabBlocked(index))
    return;

  chrome::ShowHungRendererDialog(source);
}

void Browser::RendererResponsive(WebContents* source) {
  chrome::HideHungRendererDialog(source);
}

void Browser::WorkerCrashed(WebContents* source) {
  SimpleAlertInfoBarDelegate::Create(
      InfoBarService::FromWebContents(source), InfoBarDelegate::kNoIconID,
      l10n_util::GetStringUTF16(IDS_WEBWORKER_CRASHED_PROMPT), true);
}

void Browser::DidNavigateMainFramePostCommit(WebContents* web_contents) {
  if (web_contents == tab_strip_model_->GetActiveWebContents())
    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
}

void Browser::DidNavigateToPendingEntry(WebContents* web_contents) {
  if (web_contents == tab_strip_model_->GetActiveWebContents())
    UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);
}

content::JavaScriptDialogManager* Browser::GetJavaScriptDialogManager() {
  return GetJavaScriptDialogManagerInstance();
}

content::ColorChooser* Browser::OpenColorChooser(
      WebContents* web_contents,
      SkColor initial_color,
      const std::vector<content::ColorSuggestion>& suggestions) {
  return chrome::ShowColorChooser(web_contents, initial_color);
}

void Browser::RunFileChooser(WebContents* web_contents,
                             const content::FileChooserParams& params) {
  FileSelectHelper::RunFileChooser(web_contents, params);
}

void Browser::EnumerateDirectory(WebContents* web_contents,
                                 int request_id,
                                 const base::FilePath& path) {
  FileSelectHelper::EnumerateDirectory(web_contents, request_id, path);
}

bool Browser::EmbedsFullscreenWidget() const {
#if defined(TOOLKIT_GTK)
  return false;
#else
  return !CommandLine::ForCurrentProcess()->
      HasSwitch(switches::kDisableFullscreenWithinTab);
#endif
}

void Browser::ToggleFullscreenModeForTab(WebContents* web_contents,
                                         bool enter_fullscreen) {
  fullscreen_controller_->ToggleFullscreenModeForTab(web_contents,
                                                     enter_fullscreen);
}

bool Browser::IsFullscreenForTabOrPending(
    const WebContents* web_contents) const {
  return fullscreen_controller_->IsFullscreenForTabOrPending(web_contents);
}

void Browser::RegisterProtocolHandler(WebContents* web_contents,
                                      const std::string& protocol,
                                      const GURL& url,
                                      const base::string16& title,
                                      bool user_gesture) {
  Profile* profile =
      Profile::FromBrowserContext(web_contents->GetBrowserContext());
  if (profile->IsOffTheRecord())
    return;

  ProtocolHandler handler =
      ProtocolHandler::CreateProtocolHandler(protocol, url, title);

  ProtocolHandlerRegistry* registry =
      ProtocolHandlerRegistryFactory::GetForProfile(profile);
  if (registry->SilentlyHandleRegisterHandlerRequest(handler))
    return;

  TabSpecificContentSettings* tab_content_settings =
      TabSpecificContentSettings::FromWebContents(web_contents);
  if (!user_gesture && window_) {
    tab_content_settings->set_pending_protocol_handler(handler);
    tab_content_settings->set_previous_protocol_handler(
        registry->GetHandlerFor(handler.protocol()));
    window_->GetLocationBar()->UpdateContentSettingsIcons();
    return;
  }

  // Make sure content-setting icon is turned off in case the page does
  // ungestured and gestured RPH calls.
  if (window_) {
    tab_content_settings->ClearPendingProtocolHandler();
    window_->GetLocationBar()->UpdateContentSettingsIcons();
  }

  PermissionBubbleManager* bubble_manager =
      PermissionBubbleManager::FromWebContents(web_contents);
  if (PermissionBubbleManager::Enabled() && bubble_manager) {
    bubble_manager->AddRequest(
        new RegisterProtocolHandlerPermissionRequest(registry, handler,
                                                     url, user_gesture));
  } else {
    RegisterProtocolHandlerInfoBarDelegate::Create(
        InfoBarService::FromWebContents(web_contents), registry, handler);
  }
}

void Browser::UpdatePreferredSize(WebContents* source,
                                  const gfx::Size& pref_size) {
  window_->UpdatePreferredSize(source, pref_size);
}

void Browser::ResizeDueToAutoResize(WebContents* source,
                                    const gfx::Size& new_size) {
  window_->ResizeDueToAutoResize(source, new_size);
}

void Browser::FindReply(WebContents* web_contents,
                        int request_id,
                        int number_of_matches,
                        const gfx::Rect& selection_rect,
                        int active_match_ordinal,
                        bool final_update) {
  FindTabHelper* find_tab_helper = FindTabHelper::FromWebContents(web_contents);
  if (!find_tab_helper)
    return;

  find_tab_helper->HandleFindReply(request_id,
                                   number_of_matches,
                                   selection_rect,
                                   active_match_ordinal,
                                   final_update);
}

void Browser::RequestToLockMouse(WebContents* web_contents,
                                 bool user_gesture,
                                 bool last_unlocked_by_target) {
  fullscreen_controller_->RequestToLockMouse(web_contents,
                                             user_gesture,
                                             last_unlocked_by_target);
}

void Browser::LostMouseLock() {
  fullscreen_controller_->LostMouseLock();
}

void Browser::RequestMediaAccessPermission(
    content::WebContents* web_contents,
    const content::MediaStreamRequest& request,
    const content::MediaResponseCallback& callback) {
  ::RequestMediaAccessPermission(web_contents, profile_, request, callback);
}

bool Browser::RequestPpapiBrokerPermission(
    WebContents* web_contents,
    const GURL& url,
    const base::FilePath& plugin_path,
    const base::Callback<void(bool)>& callback) {
  PepperBrokerInfoBarDelegate::Create(web_contents, url, plugin_path, callback);
  return true;
}

gfx::Size Browser::GetSizeForNewRenderView(
    const WebContents* web_contents) const {
  // When navigating away from NTP with unpinned bookmark bar, the bookmark bar
  // would disappear on non-NTP pages, resulting in a bigger size for the new
  // render view.
  gfx::Size size = web_contents->GetView()->GetContainerSize();
  // Don't change render view size if bookmark bar is currently not detached,
  // or there's no pending entry, or navigating to a NTP page.
  if (size.IsEmpty() || bookmark_bar_state_ != BookmarkBar::DETACHED)
    return size;
  const NavigationEntry* pending_entry =
      web_contents->GetController().GetPendingEntry();
  if (pending_entry &&
      !chrome::IsNTPURL(pending_entry->GetVirtualURL(), profile_)) {
    size.Enlarge(
        0, window()->GetRenderViewHeightInsetWithDetachedBookmarkBar());
  }
  return size;
}

///////////////////////////////////////////////////////////////////////////////
// Browser, CoreTabHelperDelegate implementation:

void Browser::SwapTabContents(content::WebContents* old_contents,
                              content::WebContents* new_contents,
                              bool did_start_load,
                              bool did_finish_load) {
  int index = tab_strip_model_->GetIndexOfWebContents(old_contents);
  DCHECK_NE(TabStripModel::kNoTab, index);
  tab_strip_model_->ReplaceWebContentsAt(index, new_contents);
}

bool Browser::CanReloadContents(content::WebContents* web_contents) const {
  return chrome::CanReload(this);
}

bool Browser::CanSaveContents(content::WebContents* web_contents) const {
  return chrome::CanSavePage(this);
}

///////////////////////////////////////////////////////////////////////////////
// Browser, SearchEngineTabHelperDelegate implementation:

void Browser::ConfirmAddSearchProvider(TemplateURL* template_url,
                                       Profile* profile) {
  window()->ConfirmAddSearchProvider(template_url, profile);
}

///////////////////////////////////////////////////////////////////////////////
// Browser, web_modal::WebContentsModalDialogManagerDelegate implementation:

void Browser::SetWebContentsBlocked(content::WebContents* web_contents,
                                    bool blocked) {
  int index = tab_strip_model_->GetIndexOfWebContents(web_contents);
  if (index == TabStripModel::kNoTab) {
    NOTREACHED();
    return;
  }
  tab_strip_model_->SetTabBlocked(index, blocked);
  if (!blocked && tab_strip_model_->GetActiveWebContents() == web_contents)
    web_contents->GetView()->Focus();
}

web_modal::WebContentsModalDialogHost*
Browser::GetWebContentsModalDialogHost() {
  return window_->GetWebContentsModalDialogHost();
}

///////////////////////////////////////////////////////////////////////////////
// Browser, BookmarkTabHelperDelegate implementation:

void Browser::URLStarredChanged(content::WebContents* web_contents,
                                bool starred) {
  if (web_contents == tab_strip_model_->GetActiveWebContents())
    window_->SetStarredState(starred);
}

///////////////////////////////////////////////////////////////////////////////
// Browser, ZoomObserver implementation:

void Browser::OnZoomChanged(content::WebContents* source,
                            bool can_show_bubble) {
  if (source == tab_strip_model_->GetActiveWebContents()) {
    // Only show the zoom bubble for zoom changes in the active window.
    window_->ZoomChangedForActiveTab(can_show_bubble && window_->IsActive() &&
        !is_devtools());
  }
}

///////////////////////////////////////////////////////////////////////////////
// Browser, ui::SelectFileDialog::Listener implementation:

void Browser::FileSelected(const base::FilePath& path, int index,
                           void* params) {
  FileSelectedWithExtraInfo(ui::SelectedFileInfo(path, path), index, params);
}

void Browser::FileSelectedWithExtraInfo(const ui::SelectedFileInfo& file_info,
                                        int index,
                                        void* params) {
  profile_->set_last_selected_directory(file_info.file_path.DirName());

  GURL url = net::FilePathToFileURL(file_info.local_path);

#if defined(OS_CHROMEOS)
  drive::util::MaybeSetDriveURL(profile_, file_info.file_path, &url);
#endif

  if (url.is_empty())
    return;

  OpenURL(OpenURLParams(
      url, Referrer(), CURRENT_TAB, content::PAGE_TRANSITION_TYPED, false));
}

///////////////////////////////////////////////////////////////////////////////
// Browser, content::NotificationObserver implementation:

void Browser::Observe(int type,
                      const content::NotificationSource& source,
                      const content::NotificationDetails& details) {
  switch (type) {
    case chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED: {
      chrome::UpdateCommandEnabled(
          this,
          IDC_BOOKMARK_PAGE,
          !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
      chrome::UpdateCommandEnabled(
          this,
          IDC_BOOKMARK_ALL_TABS,
          !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));

      if (window()->GetLocationBar())
        window()->GetLocationBar()->UpdatePageActions();

      const extensions::UnloadedExtensionInfo* extension_info =
          content::Details<extensions::UnloadedExtensionInfo>(details).ptr();

      // Close any tabs from the unloaded extension, unless it's terminated,
      // in which case let the sad tabs remain.
      if (extension_info->reason !=
          extensions::UnloadedExtensionInfo::REASON_TERMINATE) {
        const Extension* extension = extension_info->extension;
        // Iterate backwards as we may remove items while iterating.
        for (int i = tab_strip_model_->count() - 1; i >= 0; --i) {
          WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
          // Two cases are handled here:
          // - The scheme check is for when an extension page is loaded in a
          //   tab, e.g. chrome-extension://id/page.html.
          // - The extension_app check is for apps, which can have non-extension
          //   schemes, e.g. https://mail.google.com if you have the Gmail app
          //   installed.
          if ((web_contents->GetURL().SchemeIs(extensions::kExtensionScheme) &&
               web_contents->GetURL().host() == extension->id()) ||
              (extensions::TabHelper::FromWebContents(
                   web_contents)->extension_app() == extension)) {
            tab_strip_model_->CloseWebContentsAt(i, TabStripModel::CLOSE_NONE);
          }
        }
      }
      break;
    }

    case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED: {
      Profile* profile = content::Source<Profile>(source).ptr();
      if (profile_->IsSameProfile(profile) && window()->GetLocationBar())
        window()->GetLocationBar()->InvalidatePageActions();
      break;
    }

    case chrome::NOTIFICATION_EXTENSION_LOADED:
      chrome::UpdateCommandEnabled(
          this,
          IDC_BOOKMARK_PAGE,
          !chrome::ShouldRemoveBookmarkThisPageUI(profile_));
      chrome::UpdateCommandEnabled(
          this,
          IDC_BOOKMARK_ALL_TABS,
          !chrome::ShouldRemoveBookmarkOpenPagesUI(profile_));
    // fallthrough
    case chrome::NOTIFICATION_EXTENSION_UNINSTALLED:
      // During window creation on Windows we may end up calling into
      // SHAppBarMessage, which internally spawns a nested message loop. This
      // makes it possible for us to end up here before window creation has
      // completed, at which point window_ is NULL. See 94752 for details.
      if (window() && window()->GetLocationBar())
        window()->GetLocationBar()->UpdatePageActions();
      break;

#if defined(ENABLE_THEMES)
    case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
      window()->UserChangedTheme();
      break;
#endif

    case chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED: {
      WebContents* web_contents = content::Source<WebContents>(source).ptr();
      if (web_contents == tab_strip_model_->GetActiveWebContents()) {
        LocationBar* location_bar = window()->GetLocationBar();
        if (location_bar)
          location_bar->UpdateContentSettingsIcons();
      }
      break;
    }

    default:
      NOTREACHED() << "Got a notification we didn't register for.";
  }
}

///////////////////////////////////////////////////////////////////////////////
// Browser, Command and state updating (private):

void Browser::OnDevToolsDisabledChanged() {
  if (profile_->GetPrefs()->GetBoolean(prefs::kDevToolsDisabled))
    content::DevToolsManager::GetInstance()->CloseAllClientHosts();
}

///////////////////////////////////////////////////////////////////////////////
// Browser, UI update coalescing and handling (private):

void Browser::UpdateToolbar(bool should_restore_state) {
  window_->UpdateToolbar(should_restore_state ?
      tab_strip_model_->GetActiveWebContents() : NULL);
}

void Browser::ScheduleUIUpdate(const WebContents* source,
                               unsigned changed_flags) {
  DCHECK(source);
  int index = tab_strip_model_->GetIndexOfWebContents(source);
  DCHECK_NE(TabStripModel::kNoTab, index);

  // Do some synchronous updates.
  if (changed_flags & content::INVALIDATE_TYPE_URL &&
      source == tab_strip_model_->GetActiveWebContents()) {
    // Only update the URL for the current tab. Note that we do not update
    // the navigation commands since those would have already been updated
    // synchronously by NavigationStateChanged.
    UpdateToolbar(false);
    changed_flags &= ~content::INVALIDATE_TYPE_URL;
  }
  if (changed_flags & content::INVALIDATE_TYPE_LOAD) {
    // Update the loading state synchronously. This is so the throbber will
    // immediately start/stop, which gives a more snappy feel. We want to do
    // this for any tab so they start & stop quickly.
    tab_strip_model_->UpdateWebContentsStateAt(
        tab_strip_model_->GetIndexOfWebContents(source),
        TabStripModelObserver::LOADING_ONLY);
    // The status bubble needs to be updated during INVALIDATE_TYPE_LOAD too,
    // but we do that asynchronously by not stripping INVALIDATE_TYPE_LOAD from
    // changed_flags.
  }

  if (changed_flags & content::INVALIDATE_TYPE_TITLE && !source->IsLoading()) {
    // To correctly calculate whether the title changed while not loading
    // we need to process the update synchronously. This state only matters for
    // the TabStripModel, so we notify the TabStripModel now and notify others
    // asynchronously.
    tab_strip_model_->UpdateWebContentsStateAt(
        tab_strip_model_->GetIndexOfWebContents(source),
        TabStripModelObserver::TITLE_NOT_LOADING);
  }

  // If the only updates were synchronously handled above, we're done.
  if (changed_flags == 0)
    return;

  // Save the dirty bits.
  scheduled_updates_[source] |= changed_flags;

  if (!chrome_updater_factory_.HasWeakPtrs()) {
    // No task currently scheduled, start another.
    base::MessageLoop::current()->PostDelayedTask(
        FROM_HERE,
        base::Bind(&Browser::ProcessPendingUIUpdates,
                   chrome_updater_factory_.GetWeakPtr()),
        base::TimeDelta::FromMilliseconds(kUIUpdateCoalescingTimeMS));
  }
}

void Browser::ProcessPendingUIUpdates() {
#ifndef NDEBUG
  // Validate that all tabs we have pending updates for exist. This is scary
  // because the pending list must be kept in sync with any detached or
  // deleted tabs.
  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
       i != scheduled_updates_.end(); ++i) {
    bool found = false;
    for (int tab = 0; tab < tab_strip_model_->count(); tab++) {
      if (tab_strip_model_->GetWebContentsAt(tab) == i->first) {
        found = true;
        break;
      }
    }
    DCHECK(found);
  }
#endif

  chrome_updater_factory_.InvalidateWeakPtrs();

  for (UpdateMap::const_iterator i = scheduled_updates_.begin();
       i != scheduled_updates_.end(); ++i) {
    // Do not dereference |contents|, it may be out-of-date!
    const WebContents* contents = i->first;
    unsigned flags = i->second;

    if (contents == tab_strip_model_->GetActiveWebContents()) {
      // Updates that only matter when the tab is selected go here.

      if (flags & content::INVALIDATE_TYPE_PAGE_ACTIONS) {
        LocationBar* location_bar = window()->GetLocationBar();
        if (location_bar)
          location_bar->UpdatePageActions();
      }
      // Updating the URL happens synchronously in ScheduleUIUpdate.
      if (flags & content::INVALIDATE_TYPE_LOAD && GetStatusBubble()) {
        GetStatusBubble()->SetStatus(CoreTabHelper::FromWebContents(
            tab_strip_model_->GetActiveWebContents())->GetStatusText());
      }

      if (flags & (content::INVALIDATE_TYPE_TAB |
                   content::INVALIDATE_TYPE_TITLE)) {
        window_->UpdateTitleBar();
      }
    }

    // Updates that don't depend upon the selected state go here.
    if (flags &
        (content::INVALIDATE_TYPE_TAB | content::INVALIDATE_TYPE_TITLE)) {
      tab_strip_model_->UpdateWebContentsStateAt(
          tab_strip_model_->GetIndexOfWebContents(contents),
          TabStripModelObserver::ALL);
    }

    // Update the bookmark bar. It may happen that the tab is crashed, and if
    // so, the bookmark bar should be hidden.
    if (flags & content::INVALIDATE_TYPE_TAB)
      UpdateBookmarkBarState(BOOKMARK_BAR_STATE_CHANGE_TAB_STATE);

    // We don't need to process INVALIDATE_STATE, since that's not visible.
  }

  scheduled_updates_.clear();
}

void Browser::RemoveScheduledUpdatesFor(WebContents* contents) {
  if (!contents)
    return;

  UpdateMap::iterator i = scheduled_updates_.find(contents);
  if (i != scheduled_updates_.end())
    scheduled_updates_.erase(i);
}

///////////////////////////////////////////////////////////////////////////////
// Browser, Getters for UI (private):

StatusBubble* Browser::GetStatusBubble() {
  // In kiosk and exclusive app mode, we want to always hide the status bubble.
  if (chrome::IsRunningInAppMode())
    return NULL;

  return window_ ? window_->GetStatusBubble() : NULL;
}

///////////////////////////////////////////////////////////////////////////////
// Browser, Session restore functions (private):

void Browser::SyncHistoryWithTabs(int index) {
  SessionService* session_service =
      SessionServiceFactory::GetForProfileIfExisting(profile());
  if (session_service) {
    for (int i = index; i < tab_strip_model_->count(); ++i) {
      WebContents* web_contents = tab_strip_model_->GetWebContentsAt(i);
      if (web_contents) {
        SessionTabHelper* session_tab_helper =
            SessionTabHelper::FromWebContents(web_contents);
        session_service->SetTabIndexInWindow(
            session_id(), session_tab_helper->session_id(), i);
        session_service->SetPinnedState(
            session_id(),
            session_tab_helper->session_id(),
            tab_strip_model_->IsTabPinned(i));
      }
    }
  }
}

///////////////////////////////////////////////////////////////////////////////
// Browser, In-progress download termination handling (private):

bool Browser::CanCloseWithInProgressDownloads() {
  // If we've prompted, we need to hear from the user before we
  // can close.
  if (cancel_download_confirmation_state_ != NOT_PROMPTED)
    return cancel_download_confirmation_state_ != WAITING_FOR_RESPONSE;

  int num_downloads_blocking;
  Browser::DownloadClosePreventionType dialog_type =
      OkToCloseWithInProgressDownloads(&num_downloads_blocking);
  if (dialog_type == DOWNLOAD_CLOSE_OK)
    return true;

  // Closing this window will kill some downloads; prompt to make sure
  // that's ok.
  cancel_download_confirmation_state_ = WAITING_FOR_RESPONSE;
  window_->ConfirmBrowserCloseWithPendingDownloads(
      num_downloads_blocking,
      dialog_type,
      false,
      base::Bind(&Browser::InProgressDownloadResponse,
                 weak_factory_.GetWeakPtr()));

  // Return false so the browser does not close.  We'll close if the user
  // confirms in the dialog.
  return false;
}

///////////////////////////////////////////////////////////////////////////////
// Browser, Assorted utility functions (private):

void Browser::SetAsDelegate(WebContents* web_contents, Browser* delegate) {
  // WebContents...
  web_contents->SetDelegate(delegate);

  // ...and all the helpers.
  BookmarkTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
  WebContentsModalDialogManager::FromWebContents(web_contents)->
      SetDelegate(delegate);
  CoreTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
  SearchEngineTabHelper::FromWebContents(web_contents)->set_delegate(delegate);
  ZoomController::FromWebContents(web_contents)->set_observer(delegate);
  TranslateTabHelper* translate_tab_helper =
      TranslateTabHelper::FromWebContents(web_contents);
  translate_tab_helper->translate_driver().set_observer(
      delegate ? delegate->translate_driver_observer_.get() : NULL);
}

void Browser::CloseFrame() {
  window_->Close();
}

void Browser::TabDetachedAtImpl(content::WebContents* contents,
                                int index,
                                DetachType type) {
  if (type == DETACH_TYPE_DETACH) {
    // Save the current location bar state, but only if the tab being detached
    // is the selected tab.  Because saving state can conditionally revert the
    // location bar, saving the current tab's location bar state to a
    // non-selected tab can corrupt both tabs.
    if (contents == tab_strip_model_->GetActiveWebContents()) {
      LocationBar* location_bar = window()->GetLocationBar();
      if (location_bar)
        location_bar->SaveStateToContents(contents);
    }

    if (!tab_strip_model_->closing_all())
      SyncHistoryWithTabs(0);
  }

  SetAsDelegate(contents, NULL);
  RemoveScheduledUpdatesFor(contents);

  if (find_bar_controller_.get() && index == tab_strip_model_->active_index()) {
    find_bar_controller_->ChangeWebContents(NULL);
  }

  // Stop observing search model changes for this tab.
  search_delegate_->OnTabDetached(contents);

  for (size_t i = 0; i < interstitial_observers_.size(); i++) {
    if (interstitial_observers_[i]->web_contents() != contents)
      continue;

    delete interstitial_observers_[i];
    interstitial_observers_.erase(interstitial_observers_.begin() + i);
    return;
  }
}

bool Browser::ShouldShowLocationBar() const {
  if (!is_app()) {
    // Hide the URL for singleton settings windows.
    // TODO(stevenjb): We could avoid this check by setting a Browser
    // property for "system" windows, possibly shared with hosted app windows.
    // crbug.com/350128.
    if (chrome::IsSettingsWindow(this))
      return false;
    return true;
  }

  // Normally apps do not show a location bar.
  if (app_type() != APP_TYPE_HOST ||
      app_name() == DevToolsWindow::kDevToolsApp ||
      !CommandLine::ForCurrentProcess()->HasSwitch(
          switches::kEnableStreamlinedHostedApps))
    return false;

  // If kEnableStreamlinedHostedApps is true, show the locaiton bar for non
  // legacy packaged apps.
  ExtensionService* service =
      extensions::ExtensionSystem::Get(profile_)->extension_service();
  const extensions::Extension* extension =
      service ? service->GetInstalledExtension(
                    web_app::GetExtensionIdFromApplicationName(app_name()))
              : NULL;
  return (!extension || !extension->is_legacy_packaged_app());
}

bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
                                        bool check_fullscreen) const {
  bool hide_ui_for_fullscreen = check_fullscreen && ShouldHideUIForFullscreen();

  unsigned int features = FEATURE_INFOBAR | FEATURE_DOWNLOADSHELF;

  if (is_type_tabbed())
    features |= FEATURE_BOOKMARKBAR;

  if (!hide_ui_for_fullscreen) {
    if (!is_type_tabbed())
      features |= FEATURE_TITLEBAR;

    if (is_type_tabbed())
      features |= FEATURE_TABSTRIP;

    if (is_type_tabbed())
      features |= FEATURE_TOOLBAR;

    if (ShouldShowLocationBar())
      features |= FEATURE_LOCATIONBAR;
  }
  return !!(features & feature);
}

void Browser::UpdateBookmarkBarState(BookmarkBarStateChangeReason reason) {
  BookmarkBar::State state;
  // The bookmark bar is always hidden for Guest Sessions and in fullscreen
  // mode, unless on the new tab page.
  if (profile_->IsGuestSession()) {
    state = BookmarkBar::HIDDEN;
  } else if (browser_defaults::bookmarks_enabled &&
      profile_->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar) &&
      !ShouldHideUIForFullscreen()) {
    state = BookmarkBar::SHOW;
  } else {
    WebContents* web_contents = tab_strip_model_->GetActiveWebContents();
    BookmarkTabHelper* bookmark_tab_helper =
        web_contents ? BookmarkTabHelper::FromWebContents(web_contents) : NULL;
    if (bookmark_tab_helper && bookmark_tab_helper->ShouldShowBookmarkBar())
      state = BookmarkBar::DETACHED;
    else
      state = BookmarkBar::HIDDEN;
  }

  if (state == bookmark_bar_state_)
    return;

  bookmark_bar_state_ = state;

  if (!window_)
    return;  // This is called from the constructor when window_ is NULL.

  if (reason == BOOKMARK_BAR_STATE_CHANGE_TAB_SWITCH) {
    // Don't notify BrowserWindow on a tab switch as at the time this is invoked
    // BrowserWindow hasn't yet switched tabs. The BrowserWindow implementations
    // end up querying state once they process the tab switch.
    return;
  }

  bool shouldAnimate = reason == BOOKMARK_BAR_STATE_CHANGE_PREF_CHANGE;
  window_->BookmarkBarStateChanged(shouldAnimate ?
      BookmarkBar::ANIMATE_STATE_CHANGE :
      BookmarkBar::DONT_ANIMATE_STATE_CHANGE);
}

bool Browser::ShouldHideUIForFullscreen() const {
  // Windows and GTK remove the top controls in fullscreen, but Mac and Ash
  // keep the controls in a slide-down panel.
  return window_ && window_->ShouldHideUIForFullscreen();
}

bool Browser::MaybeCreateBackgroundContents(
    int route_id,
    WebContents* opener_web_contents,
    const base::string16& frame_name,
    const GURL& target_url,
    const std::string& partition_id,
    content::SessionStorageNamespace* session_storage_namespace) {
  GURL opener_url = opener_web_contents->GetURL();
  ExtensionService* extensions_service =
      extensions::ExtensionSystem::Get(profile_)->extension_service();

  if (!opener_url.is_valid() ||
      frame_name.empty() ||
      !extensions_service ||
      !extensions_service->is_ready())
    return false;

  // Only hosted apps have web extents, so this ensures that only hosted apps
  // can create BackgroundContents. We don't have to check for background
  // permission as that is checked in RenderMessageFilter when the CreateWindow
  // message is processed.
  const Extension* extension =
      extensions_service->extensions()->GetHostedAppByURL(opener_url);
  if (!extension)
    return false;

  // No BackgroundContents allowed if BackgroundContentsService doesn't exist.
  BackgroundContentsService* service =
      BackgroundContentsServiceFactory::GetForProfile(profile_);
  if (!service)
    return false;

  // Ensure that we're trying to open this from the extension's process.
  SiteInstance* opener_site_instance = opener_web_contents->GetSiteInstance();
  extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
  if (!opener_site_instance->GetProcess() ||
      !process_map->Contains(
          extension->id(), opener_site_instance->GetProcess()->GetID())) {
    return false;
  }

  // Only allow a single background contents per app.
  bool allow_js_access = extensions::BackgroundInfo::AllowJSAccess(extension);
  BackgroundContents* existing =
      service->GetAppBackgroundContents(base::ASCIIToUTF16(extension->id()));
  if (existing) {
    // For non-scriptable background contents, ignore the request altogether,
    // (returning true, so that a regular WebContents isn't created either).
    if (!allow_js_access)
      return true;
    // For scriptable background pages, if one already exists, close it (even
    // if it was specified in the manifest).
    delete existing;
  }

  // If script access is not allowed, create the the background contents in a
  // new SiteInstance, so that a separate process is used.
  scoped_refptr<content::SiteInstance> site_instance =
      allow_js_access ?
      opener_site_instance :
      content::SiteInstance::Create(opener_web_contents->GetBrowserContext());

  // Passed all the checks, so this should be created as a BackgroundContents.
  BackgroundContents* contents =
      service->CreateBackgroundContents(site_instance.get(),
                                        route_id,
                                        profile_,
                                        frame_name,
                                        base::ASCIIToUTF16(extension->id()),
                                        partition_id,
                                        session_storage_namespace);

  // When a separate process is used, the original renderer cannot access the
  // new window later, thus we need to navigate the window now.
  if (contents && !allow_js_access) {
    contents->web_contents()->GetController().LoadURL(
        target_url,
        content::Referrer(),
        content::PAGE_TRANSITION_LINK,
        std::string());  // No extra headers.
  }

  return contents != NULL;
}