1 // Copyright 2013 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. 14 IPC_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. 20 IPC_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. 26 IPC_MESSAGE_CONTROL0(DeviceOrientationHostMsg_StopPolling) 27