Add a dummy variable to ResourceMsg_DataReceived.

content/child/resource_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.
 
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
 
 #ifndef CONTENT_CHILD_RESOURCE_DISPATCHER_H_
 #define CONTENT_CHILD_RESOURCE_DISPATCHER_H_
 
 #include <deque>
@@ skipping 172 matching lines @@
   void OnUploadProgress(int request_id, int64 position, int64 size);
   void OnReceivedResponse(int request_id, const ResourceResponseHead&);
   void OnReceivedCachedMetadata(int request_id, const std::vector<char>& data);
   void OnReceivedRedirect(int request_id,
                           const net::RedirectInfo& redirect_info,
                           const ResourceResponseHead& response_head);
   void OnSetDataBuffer(int request_id,
                        base::SharedMemoryHandle shm_handle,
                        int shm_size,
                        base::ProcessId renderer_pid);
+  // TODO(erikchen): This dummy variable is temporary and is only intended to be
+  // present for one Canary release. http://crbug.com/527588.
   void OnReceivedData(int request_id,
+                      int /* dummy variable */,
                       int data_offset,
                       int data_length,
                       int encoded_data_length);
   void OnDownloadedData(int request_id, int data_len, int encoded_data_length);
   void OnRequestComplete(
       int request_id,
       const ResourceMsg_RequestCompleteData& request_complete_data);
 
   // Dispatch the message to one of the message response handlers.
   void DispatchMessage(const IPC::Message& message);
@@ skipping 47 matching lines @@
   scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
 
   base::WeakPtrFactory<ResourceDispatcher> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_RESOURCE_DISPATCHER_H_