// Copyright 2013 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. // IPC messages for device orientation. // Multiply-included message file, hence no include guard. #include "base/memory/shared_memory.h" #include "ipc/ipc_message_macros.h" #define IPC_MESSAGE_START DeviceOrientationMsgStart // Asks the browser process to activate Device Orientation sensors if necessary. IPC_MESSAGE_CONTROL0(DeviceOrientationHostMsg_StartPolling) // The browser process asynchronously returns the shared memory handle that will // hold the data from the hardware sensors. // See device_orientation_hardware_buffer.h for a description of how // synchronization is handled. IPC_MESSAGE_CONTROL1(DeviceOrientationMsg_DidStartPolling, base::SharedMemoryHandle /* handle */) // Notifies the browser process that the renderer process is not using the // Device Orientation data anymore. The number of Starts should match the // number of Stops. IPC_MESSAGE_CONTROL0(DeviceOrientationHostMsg_StopPolling)