Implement the gamepad API in the IPC proxy

ppapi/proxy/plugin_dispatcher.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 PPAPI_PROXY_PLUGIN_DISPATCHER_H_
 #define PPAPI_PROXY_PLUGIN_DISPATCHER_H_
 
 #include <set>
 #include <string>
 
@@ skipping 129 matching lines @@
   // resource. Guaranteed non-NULL.
   thunk::PPB_Instance_API* GetInstanceAPI();
   thunk::ResourceCreationAPI* GetResourceCreationAPI();
 
   // Returns the Preferences.
   const Preferences& preferences() const { return preferences_; }
 
   uint32 plugin_dispatcher_id() const { return plugin_dispatcher_id_; }
   bool incognito() const { return incognito_; }
 
+  // Dispatches the given resource message to the appropriate resource in the
+  // plugin process. This should be wired to the various channels that messages
+  // come in from various other processes.
+  static void DispatchResourceReply(
+      const ppapi::proxy::ResourceMessageReplyParams& reply_params,
+      const IPC::Message& nested_msg);
+
  private:
   friend class PluginDispatcherTest;
 
   // Notifies all live instances that they're now closed. This is used when
   // a renderer crashes or some other error is received.
   void ForceFreeAllInstances();
 
   // IPC message handlers.
   void OnMsgResourceReply(
       const ppapi::proxy::ResourceMessageReplyParams& reply_params,
@@ skipping 24 matching lines @@
   // incognito mode.
   bool incognito_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginDispatcher);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PLUGIN_DISPATCHER_H_