Remove the browser_sync flag.

chrome/browser/sync/profile_sync_service.h

 // Copyright (c) 2006-2008 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.
 
-#if defined(BROWSER_SYNC)
-
 #ifndef CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
 
 #include <string>
 #include <map>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/observer_list.h"
@@ skipping 289 matching lines @@
   // occurred during syncer operation.  This value should be checked before
   // doing any work that might corrupt things further.
   bool unrecoverable_error_detected_;
 
   ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncService);
 };
 
 #endif  // CHROME_BROWSER_SYNC_PROFILE_SYNC_SERVICE_H_
-
-#endif  // defined(BROWSER_SYNC)