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

net/url_request/test_url_fetcher_factory.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 NET_URL_REQUEST_TEST_URL_FETCHER_FACTORY_H_
 #define NET_URL_REQUEST_TEST_URL_FETCHER_FACTORY_H_
 
 #include <list>
 #include <map>
 #include <string>
@@ skipping 88 matching lines @@
       HttpRequestHeaders* headers) const OVERRIDE;
   virtual void SetRequestContext(
       URLRequestContextGetter* request_context_getter) OVERRIDE;
   virtual void SetFirstPartyForCookies(
       const GURL& first_party_for_cookies) OVERRIDE;
   virtual void SetURLRequestUserData(
       const void* key,
       const CreateDataCallback& create_data_callback) OVERRIDE;
   virtual void SetStopOnRedirect(bool stop_on_redirect) OVERRIDE;
   virtual void SetAutomaticallyRetryOn5xx(bool retry) OVERRIDE;
-  virtual void SetMaxRetries(int max_retries) OVERRIDE;
-  virtual int GetMaxRetries() const OVERRIDE;
+  virtual void SetMaxRetriesOn5xx(int max_retries) OVERRIDE;
+  virtual int GetMaxRetriesOn5xx() const OVERRIDE;
   virtual base::TimeDelta GetBackoffDelay() const OVERRIDE;
+  virtual void SetAutomaticallyRetryOnNetworkChanges(int max_retries) OVERRIDE;
   virtual void SaveResponseToFileAtPath(
       const FilePath& file_path,
       scoped_refptr<base::TaskRunner> file_task_runner) OVERRIDE;
   virtual void SaveResponseToTemporaryFile(
       scoped_refptr<base::TaskRunner> file_task_runner) OVERRIDE;
   virtual HttpResponseHeaders* GetResponseHeaders() const OVERRIDE;
   virtual HostPortPair GetSocketAddress() const OVERRIDE;
   virtual bool WasFetchedViaProxy() const OVERRIDE;
   virtual void Start() OVERRIDE;
 
@@ skipping 207 matching lines @@
       int id,
       const GURL& url,
       URLFetcher::RequestType request_type,
       URLFetcherDelegate* d) OVERRIDE;
 
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_TEST_URL_FETCHER_FACTORY_H_