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

net/socket/client_socket_pool_manager_impl.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_SOCKET_CLIENT_SOCKET_POOL_MANAGER_IMPL_H_
 #define NET_SOCKET_CLIENT_SOCKET_POOL_MANAGER_IMPL_H_
 
 #include <map>
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 50 matching lines @@
                               HostResolver* host_resolver,
                               CertVerifier* cert_verifier,
                               ServerBoundCertService* server_bound_cert_service,
                               TransportSecurityState* transport_security_state,
                               const std::string& ssl_session_cache_shard,
                               ProxyService* proxy_service,
                               SSLConfigService* ssl_config_service,
                               HttpNetworkSession::SocketPoolType pool_type);
   virtual ~ClientSocketPoolManagerImpl();
 
-  virtual void FlushSocketPools() OVERRIDE;
+  virtual void FlushSocketPoolsWithError(int error) OVERRIDE;
   virtual void CloseIdleSockets() OVERRIDE;
 
   virtual TransportClientSocketPool* GetTransportSocketPool() OVERRIDE;
 
   virtual SSLClientSocketPool* GetSSLSocketPool() OVERRIDE;
 
   virtual SOCKSClientSocketPool* GetSocketPoolForSOCKSProxy(
       const HostPortPair& socks_proxy) OVERRIDE;
 
   virtual HttpProxyClientSocketPool* GetSocketPoolForHTTPProxy(
@@ skipping 59 matching lines @@
 
   ClientSocketPoolHistograms ssl_socket_pool_for_proxies_histograms_;
   SSLSocketPoolMap ssl_socket_pools_for_proxies_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientSocketPoolManagerImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_CLIENT_SOCKET_POOL_MANAGER_IMPL_H_