Gamepad API support for chrome on android

content/browser/gamepad/gamepad_service.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_GAMEPAD_GAMEPAD_SERVICE_H
 #define CONTENT_BROWSER_GAMEPAD_GAMEPAD_SERVICE_H
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "base/memory/singleton.h"
 #include "base/threading/thread_checker.h"
+#include "base/time/time.h"
 #include "content/common/content_export.h"
 
 namespace content {
 
 class GamepadDataFetcher;
 class GamepadProvider;
 class GamepadServiceTestConstructor;
 class RenderProcessHost;
 
 // Owns the GamepadProvider (the background polling thread) and keeps track of
@@ skipping 13 matching lines @@
   // Removes a consumer. Should be matched with an AddConsumer call.
   //
   // Must be called on the I/O thread.
   void RemoveConsumer();
 
   // Registers the given closure for calling when the user has interacted with
   // the device. This callback will only be issued once. Should only be called
   // while a consumer is active.
   void RegisterForUserGesture(const base::Closure& closure);
 
+#if defined(OS_ANDROID)
+  // Setter amd getter for the last Gamepad Data access timestamp accessed by
+  // the consumer
+  void SetGamepadAccessTimestamp(base::Time);
+  base::Time GetGamepadAccessTimestamp();
+
+  // Returns the state of polling thread regarding Gamepad Data reads via
+  // low-level data fetcher i.e. Paused or Resuming
+  bool GetPollState();
+
+  // Manages pause and resume state of polling thread in GamepadProvider
+  // |provider_|.
+  void Pause();
+  void Resume();
+#endif
+
   // Returns the shared memory handle of the gamepad data duplicated into the
   // given process.
   base::SharedMemoryHandle GetSharedMemoryHandleForProcess(
       base::ProcessHandle handle);
 
   // Stop/join with the background thread in GamepadProvider |provider_|.
   void Terminate();
 
  private:
   friend struct DefaultSingletonTraits<GamepadService>;
   friend class GamepadServiceTestConstructor;
 
   GamepadService();
 
   // Constructor for testing. This specifies the data fetcher to use for a
   // provider, bypassing the default platform one.
   GamepadService(scoped_ptr<GamepadDataFetcher> fetcher);
 
   virtual ~GamepadService();
 
   int num_readers_;
+
+#if defined(OS_ANDROID)
+  // Maintans the timestamp for last Gamepad Data access
+  base::Time gamepad_access_timestamp_;
+#endif
   scoped_ptr<GamepadProvider> provider_;
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(GamepadService);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GAMEPAD_GAMEPAD_SERVICE_H_