Send fatal proxy errors to the network delegate.

chrome/browser/net/chrome_network_delegate.h

 // Copyright (c) 2010 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 CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_
 #define CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "net/http/http_network_delegate.h"
 
 // ChromeNetworkDelegate is the central point from within the chrome code to
 // add hooks into the network stack.
 class ChromeNetworkDelegate : public net::HttpNetworkDelegate {
  public:
   ChromeNetworkDelegate();
   ~ChromeNetworkDelegate();
 
   // net::HttpNetworkDelegate methods:
   virtual void OnBeforeURLRequest(net::URLRequest* request);
   virtual void OnSendHttpRequest(net::HttpRequestHeaders* headers);
+  virtual void OnResponseStarted(net::URLRequest* request);
+  virtual void OnReadCompleted(net::URLRequest* request, int bytes_read);
 
   // TODO(willchan): Add functions for consumers to register ways to
   // access/modify the request.
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ChromeNetworkDelegate);
 };
 
 #endif  // CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_