Make original_response_headers parameter of NetworkDelegate::OnHeadersReceived const

content/shell/shell_network_delegate.cc

 // 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.
 
 #include "content/shell/shell_network_delegate.h"
 
 #include "net/base/net_errors.h"
 
 namespace content {
 
@@ skipping 18 matching lines @@
 }
 
 void ShellNetworkDelegate::OnSendHeaders(
     net::URLRequest* request,
     const net::HttpRequestHeaders& headers) {
 }
 
 int ShellNetworkDelegate::OnHeadersReceived(
     net::URLRequest* request,
     const net::CompletionCallback& callback,
-    net::HttpResponseHeaders* original_response_headers,
+    const net::HttpResponseHeaders* original_response_headers,
     scoped_refptr<net::HttpResponseHeaders>* override_response_headers) {
   return net::OK;
 }
 
 void ShellNetworkDelegate::OnBeforeRedirect(net::URLRequest* request,
                                             const GURL& new_location) {
 }
 
 void ShellNetworkDelegate::OnResponseStarted(net::URLRequest* request) {
 }
@@ skipping 46 matching lines @@
     const net::CompletionCallback& callback) {
   return net::OK;
 }
 
 void ShellNetworkDelegate::OnRequestWaitStateChange(
     const net::URLRequest& request,
     RequestWaitState waiting) {
 }
 
 }  // namespace content