Gamepad API: add support for connection events

content/browser/renderer_host/gamepad_browser_message_filter.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_RENDERER_HOST_GAMEPAD_BROWSER_MESSAGE_FILTER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_GAMEPAD_BROWSER_MESSAGE_FILTER_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/shared_memory.h"
+#include "content/browser/gamepad/gamepad_consumer.h"
 #include "content/public/browser/browser_message_filter.h"
 
 namespace content {
 
 class GamepadService;
 class RenderProcessHost;
 
-class GamepadBrowserMessageFilter : public BrowserMessageFilter {
+class GamepadBrowserMessageFilter :
+    public BrowserMessageFilter,
+    public GamepadConsumer {
  public:
-  GamepadBrowserMessageFilter();
+  GamepadBrowserMessageFilter(IPC::Sender* sender);
 
   // BrowserMessageFilter implementation.
   virtual bool OnMessageReceived(const IPC::Message& message,
                                  bool* message_was_ok) OVERRIDE;
 
+  virtual void OnGamepadConnected(
+      unsigned index,
+      const blink::WebGamepad& web_gamepad) OVERRIDE;
+  virtual void OnGamepadDisconnected(
+      unsigned index,
+      const blink::WebGamepad& web_gamepad) OVERRIDE;
+
  private:
   virtual ~GamepadBrowserMessageFilter();
 
   void OnGamepadStartPolling(base::SharedMemoryHandle* renderer_handle);
   void OnGamepadStopPolling();
 
+  IPC::Sender* sender_;
   bool is_started_;
 
   DISALLOW_COPY_AND_ASSIGN(GamepadBrowserMessageFilter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_GAMEPAD_BROWSER_MESSAGE_FILTER_H_