Add a way to implement GetInterface in the broker.

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 49 matching lines @@
     virtual uint32 Register(PluginDispatcher* plugin_dispatcher) = 0;
     virtual void Unregister(uint32 plugin_dispatcher_id) = 0;
   };
 
   // Constructor for the plugin side. The init and shutdown functions will be
   // will be automatically called when requested by the renderer side. The
   // module ID will be set upon receipt of the InitializeModule message.
   //
   // You must call InitPluginWithChannel after the constructor.
   PluginDispatcher(base::ProcessHandle remote_process_handle,
-                   GetInterfaceFunc get_interface);
+                   PP_GetInterface_Func get_interface);
   virtual ~PluginDispatcher();
 
   // The plugin side maintains a mapping from PP_Instance to Dispatcher so
   // that we can send the messages to the right channel if there are multiple
   // renderers sharing the same plugin. This mapping is maintained by
   // DidCreateInstance/DidDestroyInstance.
   static PluginDispatcher* GetForInstance(PP_Instance instance);
 
   // Same as GetForInstance but retrieves the instance from the given resource
   // object as a convenience. Returns NULL on failure.
@@ skipping 78 matching lines @@
 
   uint32 plugin_dispatcher_id_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginDispatcher);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PLUGIN_DISPATCHER_H_