Introduce ERR_NETWORK_CHANGED and allow URLFetcher to automatically retry on that error.

net/url_request/test_url_fetcher_factory.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 "net/url_request/test_url_fetcher_factory.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 108 matching lines @@
 }
 
 int TestURLFetcher::GetMaxRetries() const {
   return fake_max_retries_;
 }
 
 base::TimeDelta TestURLFetcher::GetBackoffDelay() const {
   return fake_backoff_delay_;
 }
 
+void TestURLFetcher::SetAutomaticallyRetryOnNetworkChanges(int max_retries) {
+}
+
 void TestURLFetcher::SaveResponseToFileAtPath(
     const FilePath& file_path,
     scoped_refptr<base::TaskRunner> file_task_runner) {
 }
 
 void TestURLFetcher::SaveResponseToTemporaryFile(
     scoped_refptr<base::TaskRunner> file_task_runner) {
 }
 
 HttpResponseHeaders* TestURLFetcher::GetResponseHeaders() const {
@@ skipping 221 matching lines @@
 
 URLFetcher* URLFetcherImplFactory::CreateURLFetcher(
     int id,
     const GURL& url,
     URLFetcher::RequestType request_type,
     URLFetcherDelegate* d) {
   return new URLFetcherImpl(url, request_type, d);
 }
 
 }  // namespace net