Adds the new URLRequest::OnBeforeNetworkStart hook to the

content/browser/download/download_resource_handler.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 CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 46 matching lines @@
   // Send the download creation information to the download thread.
   virtual bool OnResponseStarted(int request_id,
                                  ResourceResponse* response,
                                  bool* defer) OVERRIDE;
 
   // Pass-through implementation.
   virtual bool OnWillStart(int request_id,
                            const GURL& url,
                            bool* defer) OVERRIDE;
 
+  // Pass-through implementation.
+  virtual bool OnBeforeNetworkStart(int request_id,
+                                    const GURL& url,
+                                    bool* defer) OVERRIDE;
+
   // Create a new buffer, which will be handed to the download thread for file
   // writing and deletion.
   virtual bool OnWillRead(int request_id,
                           scoped_refptr<net::IOBuffer>* buf,
                           int* buf_size,
                           int min_size) OVERRIDE;
 
   virtual bool OnReadCompleted(int request_id, int bytes_read,
                                bool* defer) OVERRIDE;
 
@@ skipping 45 matching lines @@
 
   static const int kReadBufSize = 32768;  // bytes
   static const int kThrottleTimeMs = 200;  // milliseconds
 
   DISALLOW_COPY_AND_ASSIGN(DownloadResourceHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_