add device type as an argument in OnDevicesChanged.

content/browser/gamepad/gamepad_provider.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_BROWSER_GAMEPAD_GAMEPAD_PROVIDER_H_
 #define CONTENT_BROWSER_GAMEPAD_GAMEPAD_PROVIDER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop_proxy.h"
@@ skipping 22 matching lines @@
 
   base::SharedMemoryHandle GetRendererSharedMemoryHandle(
       base::ProcessHandle renderer_process);
 
   // Pause and resume the background polling thread. Can be called from any
   // thread.
   void Pause();
   void Resume();
 
   // base::SystemMonitor::DevicesChangedObserver implementation.
-  virtual void OnDevicesChanged() OVERRIDE;
+  virtual void OnDevicesChanged(base::SystemMonitor::DeviceType type) OVERRIDE;
 
  private:
 
   // Method for setting up the platform-specific data fetcher. Takes ownership
   // of |fetcher|.
   void DoInitializePollingThread(GamepadDataFetcher* fetcher);
 
   // Method for sending pause hints to the low-level data fetcher. Runs on
   // polling_thread_.
   void SendPauseHint(bool paused);
@@ skipping 33 matching lines @@
   scoped_ptr<base::Thread> polling_thread_;
 
   static GamepadProvider* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(GamepadProvider);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GAMEPAD_GAMEPAD_PROVIDER_H_