Revert r59012 which started using Chrome sockets for sync.

jingle/notifier/communicator/xmpp_connection_generator.cc

 // 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.
 //
 // XmppConnectionGenerator does the following algorithm:
 //   proxy = ResolveProxyInformation(connection_options)
 //   for server in server_list
 //     get dns_addresses for server
 //     connection_list = (dns_addresses X connection methods X proxy).shuffle()
 //     for connection in connection_list
 //       yield connection
 
 #include "jingle/notifier/communicator/xmpp_connection_generator.h"
 
 #if defined(OS_WIN)
 #include <winsock2.h>
 #elif defined(OS_POSIX)
 #include <arpa/inet.h>
 #endif
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
+#include "jingle/notifier/base/signal_thread_task.h"
 #include "jingle/notifier/communicator/connection_options.h"
 #include "jingle/notifier/communicator/connection_settings.h"
+#include "jingle/notifier/communicator/product_info.h"
 #include "net/base/net_errors.h"
 #include "net/base/sys_addrinfo.h"
 #include "talk/base/httpcommon-inl.h"
 #include "talk/base/task.h"
 #include "talk/base/thread.h"
 #include "talk/xmpp/prexmppauth.h"
 #include "talk/xmpp/xmppclientsettings.h"
 #include "talk/xmpp/xmppengine.h"
 
 namespace notifier {
@@ skipping 168 matching lines @@
   SignalNewSettings(*settings);
 }
 
 void XmppConnectionGenerator::HandleExhaustedConnections() {
   LOG(INFO) << "(" << buzz::XmppEngine::ERROR_SOCKET
             << ", " << first_dns_error_ << ")";
   SignalExhaustedSettings(successfully_resolved_dns_, first_dns_error_);
 }
 
 }  // namespace notifier