Revert r59012 which started using Chrome sockets for sync.

chrome/common/chrome_switches.h

 // 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.
 
 // Defines all the command-line switches used by Chrome.
 
 #ifndef CHROME_COMMON_CHROME_SWITCHES_H_
 #define CHROME_COMMON_CHROME_SWITCHES_H_
 #pragma once
 
@@ skipping 261 matching lines @@
 extern const char kServiceProcess[];
 extern const char kServiceAccountLsid[];
 extern const char kShowCompositedLayerBorders[];
 extern const char kShowIcons[];
 extern const char kShowPaintRects[];
 extern const char kSilentDumpOnDCHECK[];
 extern const char kSimpleDataSource[];
 extern const char kSingleProcess[];
 extern const char kStartMaximized[];
 extern const char kSyncAllowPlain[];
+extern const char kSyncDisableChromeAsyncSocket[];
 extern const char kSyncDisableTls[];
 extern const char kSyncEmail[];
 extern const char kSyncerThreadTimedStop[];
 extern const char kSyncNotificationMethod[];
 extern const char kSyncNotificationHost[];
 extern const char kSyncPassword[];
 extern const char kSyncPort[];
 extern const char kSyncServer[];
 extern const char kSyncServiceURL[];
 extern const char kSyncUseSslTcp[];
@@ skipping 87 matching lines @@
 #endif
 // Return true if the switches indicate the seccomp sandbox is enabled.
 bool SeccompSandboxEnabled();
 
 // DON'T ADD RANDOM STUFF HERE. Put it in the main section above in
 // alphabetical order, or in one of the ifdefs (also in order in each section).
 
 }  // namespace switches
 
 #endif  // CHROME_COMMON_CHROME_SWITCHES_H_