Implement the gamepad API in the IPC proxy

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/common/content_export.h"
 #include "ppapi/host/resource_host.h"
 
+namespace ppapi {
+namespace proxy {
+class ResourceMessageReplyParams;
+}
+}
+
 namespace content {
 
 class BrowserPpapiHost;
+class GamepadService;
 
 class CONTENT_EXPORT PepperGamepadHost : public ppapi::host::ResourceHost {
  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;
 
  private:
   int32_t OnMsgRequestMemory(ppapi::host::HostMessageContext* context);
 
+  void GotUserGesture(const ppapi::proxy::ResourceMessageReplyParams& params);
+
   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_