1// Copyright 2014 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// IPC messages for device orientation. 6// Multiply-included message file, hence no include guard. 7 8#include "base/memory/shared_memory.h" 9#include "ipc/ipc_message_macros.h" 10 11#define IPC_MESSAGE_START DeviceOrientationMsgStart 12 13// Asks the browser process to activate Device Orientation sensors if necessary. 14IPC_MESSAGE_CONTROL0(DeviceOrientationHostMsg_StartPolling) 15 16// The browser process asynchronously returns the shared memory handle that will 17// hold the data from the hardware sensors. 18// See device_orientation_hardware_buffer.h for a description of how 19// synchronization is handled. 20IPC_MESSAGE_CONTROL1(DeviceOrientationMsg_DidStartPolling, 21 base::SharedMemoryHandle /* handle */) 22 23// Notifies the browser process that the renderer process is not using the 24// Device Orientation data anymore. The number of Starts should match the 25// number of Stops. 26IPC_MESSAGE_CONTROL0(DeviceOrientationHostMsg_StopPolling) 27