Gamepad API support for chrome on android

content/common/gamepad_messages.h

 // Copyright (c) 2011 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.
 
 // Multiply-included message file, no include guard.
 
 #include "base/memory/shared_memory.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_param_traits.h"
 #include "ipc/ipc_platform_file.h"
 
 #define IPC_MESSAGE_START GamepadMsgStart
 
 // Messages sent from the renderer to the browser.
 
 // Asks the browser process to start polling, and return a shared memory
 // handles that will hold the data from the hardware. See
 // gamepad_hardware_buffer.h for a description of how synchronization is
 // handled. The number of Starts should match the number of Stops.
 IPC_SYNC_MESSAGE_CONTROL0_1(GamepadHostMsg_StartPolling,
                             base::SharedMemoryHandle /* handle */)
 
 IPC_SYNC_MESSAGE_CONTROL0_0(GamepadHostMsg_StopPolling)
+
+// Asks the browser process to pause/resume polling.
+IPC_SYNC_MESSAGE_CONTROL0_0(GamepadHostMsg_ResumePolling)
+
+IPC_SYNC_MESSAGE_CONTROL0_0(GamepadHostMsg_PausePolling)
+
+// Sets the gamepad data access timestamp to current time. It helps to identify
+// if gamepad data is being accessed or not. Based on which if timeout happens
+// the polling thread can be put to paused state.
+// Useful in case of Browser minimize or tab switch.
+IPC_SYNC_MESSAGE_CONTROL0_0(GamepadHostMsg_UpdateTimestamp)