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 motion. 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#include "ipc/ipc_param_traits.h" 11#include "ipc/ipc_platform_file.h" 12 13#define IPC_MESSAGE_START DeviceMotionMsgStart 14 15// Asks the browser process to activate Device Motion sensors if necessary. 16IPC_MESSAGE_CONTROL0(DeviceMotionHostMsg_StartPolling) 17 18// The browser process asynchronously returns the shared memory handle that will 19// hold the data from the hardware sensors. 20// See device_motion_hardware_buffer.h for a description of how 21// synchronization is handled. 22IPC_MESSAGE_CONTROL1(DeviceMotionMsg_DidStartPolling, 23 base::SharedMemoryHandle /* handle */) 24 25// Notifies the browser process that the renderer process is not using the 26// Device Motion data anymore. The number of Starts should match the number 27// of Stops. 28IPC_MESSAGE_CONTROL0(DeviceMotionHostMsg_StopPolling) 29