Gamepad API: add support for connection events

content/browser/renderer_host/pepper/pepper_gamepad_host.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_PEPPER_PEPPER_GAMEPAD_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_GAMEPAD_HOST_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
+#include "content/browser/gamepad/gamepad_consumer.h"
 #include "content/common/content_export.h"
 #include "ppapi/host/resource_host.h"
 
 namespace ppapi {
 namespace host {
 struct ReplyMessageContext;
 }
 }
 
 namespace content {
 
 class BrowserPpapiHost;
 class GamepadService;
 
-class CONTENT_EXPORT PepperGamepadHost : public ppapi::host::ResourceHost {
+class CONTENT_EXPORT PepperGamepadHost :
+    public ppapi::host::ResourceHost,
+    public GamepadConsumer {
  public:
   PepperGamepadHost(BrowserPpapiHost* host,
                     PP_Instance instance,
                     PP_Resource resource);
 
   // Allows tests to specify a gamepad service to use rather than the global
   // singleton. The caller owns the gamepad_service pointer.
   PepperGamepadHost(GamepadService* gamepad_service,
                     BrowserPpapiHost* host,
                     PP_Instance instance,
                     PP_Resource resource);
 
   virtual ~PepperGamepadHost();
 
   virtual int32_t OnResourceMessageReceived(
       const IPC::Message& msg,
       ppapi::host::HostMessageContext* context) OVERRIDE;
 
+  // GamepadConsumer implementation.
+  virtual void OnGamepadConnected(
+      unsigned index,
+      const blink::WebGamepad& gamepad) OVERRIDE {}
+  virtual void OnGamepadDisconnected(
+      unsigned index,
+      const blink::WebGamepad& gamepad) OVERRIDE {}
+
  private:
   int32_t OnRequestMemory(ppapi::host::HostMessageContext* context);
 
   void GotUserGesture(const ppapi::host::ReplyMessageContext& in_context);
 
   BrowserPpapiHost* browser_ppapi_host_;
 
   GamepadService* gamepad_service_;
 
   bool is_started_;
 
   base::WeakPtrFactory<PepperGamepadHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperGamepadHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_GAMEPAD_HOST_H_