Use macros to define pepper interfaces

ppapi/proxy/ppb_url_response_info_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_URL_RESPONSE_INFO_PROXY_H_
 #define PPAPI_PROXY_PPB_URL_RESPONSE_INFO_PROXY_H_
 
 #include "base/basictypes.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_module.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/proxy/interface_proxy.h"
 #include "ppapi/shared_impl/host_resource.h"
 
 struct PPB_URLResponseInfo;
 
 namespace ppapi {
 
 struct PPB_FileRef_CreateInfo;
 
 namespace proxy {
 
 class SerializedVarReturnValue;
 
 class PPB_URLResponseInfo_Proxy : public InterfaceProxy {
  public:
-  PPB_URLResponseInfo_Proxy(Dispatcher* dispatcher,
-                            const void* target_interface);
+  PPB_URLResponseInfo_Proxy(Dispatcher* dispatcher);
   virtual ~PPB_URLResponseInfo_Proxy();
 
-  static const Info* GetInfo();
-
   // URLResponseInfo objects are actually created and returned by the
   // URLLoader. This function allows the URLLoader to convert a new
   // HostResource representing a response info to a properly tracked
   // URLReponseInfo Resource. Returns the plugin resource ID for the
   // new resource.
   static PP_Resource CreateResponseForResource(
       const ppapi::HostResource& resource);
 
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
+  static const InterfaceID kInterfaceID = INTERFACE_ID_PPB_URL_RESPONSE_INFO;
+
  private:
   // Message handlers.
   void OnMsgGetProperty(const ppapi::HostResource& response,
                         int32_t property,
                         SerializedVarReturnValue result);
   void OnMsgGetBodyAsFileRef(const ppapi::HostResource& response,
                              PPB_FileRef_CreateInfo* result);
 
   DISALLOW_COPY_AND_ASSIGN(PPB_URLResponseInfo_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_PPB_URL_RESPONSE_INFO_PROXY_H_