Linux Aura: Use system title bar is now set by preference, not flag.

chrome/browser/ui/browser_view_prefs.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 CHROME_BROWSER_UI_BROWSER_VIEW_PREFS_H_
 #define CHROME_BROWSER_UI_BROWSER_VIEW_PREFS_H_
 
 class PrefRegistrySimple;
 
+namespace user_prefs {
+class PrefRegistrySyncable;
+}
+
 namespace chrome {
 
 // Register local state preferences specific to BrowserView.
 void RegisterBrowserViewPrefs(PrefRegistrySimple* registry);
 
+// Register local state syncable preferences specific to BrowserView.
+void RegisterBrowserViewSyncablePrefs(
+    user_prefs::PrefRegistrySyncable* registry);
+
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_BROWSER_VIEW_PREFS_H_