Refactor the URLResponseInfo to use new design

ppapi/thunk/ppb_url_response_info_api.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_THUNK_PPB_URL_RESPONSE_INFO_API_H_
 #define PPAPI_THUNK_PPB_URL_RESPONSE_INFO_API_H_
 
 #include "ppapi/c/ppb_url_response_info.h"
+#include "ppapi/shared_impl/url_response_info_data.h"
 
 namespace ppapi {
 namespace thunk {
 
 class PPB_URLResponseInfo_API {
  public:
   virtual ~PPB_URLResponseInfo_API() {}
 
   virtual PP_Var GetProperty(PP_URLResponseProperty property) = 0;
   virtual PP_Resource GetBodyAsFileRef() = 0;
+
+  // Internal function to get the internal data. This passes one plugin
+  // reference to the caller for the file ref resource if body_as_file_ref is
+  // non-null (meaning we're downloading to a file).
+  virtual URLResponseInfoData GetData() = 0;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_URL_LOADER_API_H_