Revert r59012 which started using Chrome sockets for sync.

chrome/browser/sync/profile_sync_service.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.
 
 #include "chrome/browser/sync/profile_sync_service.h"
 
 #include <map>
 #include <set>
 
 #include "app/l10n_util.h"
@@ skipping 260 matching lines @@
     std::string value(command_line.GetSwitchValueASCII(
         switches::kSyncNotificationHost));
     if (!value.empty()) {
       notifier_options_.xmpp_host_port.set_host(value);
       notifier_options_.xmpp_host_port.set_port(notifier::kDefaultXmppPort);
     }
     LOG(INFO) << "Using " << notifier_options_.xmpp_host_port.ToString()
         << " for test sync notification server.";
   }
 
+  notifier_options_.use_chrome_async_socket =
+      !command_line.HasSwitch(switches::kSyncDisableChromeAsyncSocket);
+  if (notifier_options_.use_chrome_async_socket) {
+    LOG(INFO) << "Using ChromeAsyncSocket";
+  }
+
   notifier_options_.try_ssltcp_first =
       command_line.HasSwitch(switches::kSyncUseSslTcp);
   if (notifier_options_.try_ssltcp_first) {
     LOG(INFO) << "Trying SSL/TCP port before XMPP port for notifications.";
   }
 
   if (command_line.HasSwitch(switches::kSyncNotificationMethod)) {
     const std::string notification_method_str(
         command_line.GetSwitchValueASCII(switches::kSyncNotificationMethod));
     notifier_options_.notification_method =
@@ skipping 679 matching lines @@
   // is initialized, all enabled data types are consistent with one
   // another, and no unrecoverable error has transpired.
   if (unrecoverable_error_detected_)
     return false;
 
   if (!data_type_manager_.get())
     return false;
 
   return data_type_manager_->state() == DataTypeManager::CONFIGURED;
 }