Use macros to define pepper interfaces

ppapi/proxy/ppb_video_decoder_proxy.h

 // Copyright (c) 2011 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_PPB_VIDEO_DECODER_PROXY_H_
 #define PPAPI_PROXY_PPB_VIDEO_DECODER_PROXY_H_
 
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/cpp/completion_callback.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/proxy/proxy_non_thread_safe_ref_count.h"
 #include "ppapi/shared_impl/video_decoder_impl.h"
 #include "ppapi/thunk/ppb_video_decoder_api.h"
 
 namespace ppapi {
 namespace proxy {
 
 class PPB_VideoDecoder_Proxy : public InterfaceProxy {
  public:
-  PPB_VideoDecoder_Proxy(Dispatcher* dispatcher, const void* target_interface);
+  PPB_VideoDecoder_Proxy(Dispatcher* dispatcher);
   virtual ~PPB_VideoDecoder_Proxy();
 
-  static const Info* GetInfo();
-
   // Creates a VideoDecoder object in the plugin process.
   static PP_Resource CreateProxyResource(
       PP_Instance instance,
       PP_Resource graphics_context,
       PP_VideoDecoder_Profile profile);
 
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
-  const PPB_VideoDecoder_Dev* ppb_video_decoder_target() const {
-    return static_cast<const PPB_VideoDecoder_Dev*>(target_interface());
-  }
+  static const InterfaceID kInterfaceID = INTERFACE_ID_PPB_VIDEO_DECODER_DEV;
 
  private:
   // Message handlers in the renderer process to receive messages from the
   // plugin process.
   void OnMsgCreate(PP_Instance instance,
                    const ppapi::HostResource& graphics_context,
                    PP_VideoDecoder_Profile profile,
                    ppapi::HostResource* result);
   void OnMsgDecode(
       const ppapi::HostResource& decoder,
@@ skipping 27 matching lines @@
   pp::CompletionCallbackFactory<PPB_VideoDecoder_Proxy,
                                 ProxyNonThreadSafeRefCount> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_VideoDecoder_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PPB_VIDEO_DECODER_PROXY_H_