Refactor preference syncing.

chrome/browser/ui/gtk/browser_window_gtk.cc

 // Copyright (c) 2011 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/ui/gtk/browser_window_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 
 #include <dlfcn.h>
 #include <string>
@@ skipping 1494 matching lines @@
 
 // static
 void BrowserWindowGtk::RegisterUserPrefs(PrefService* prefs) {
   bool custom_frame_default = false;
   // Avoid checking the window manager if we're not connected to an X server (as
   // is the case in Valgrind tests).
   if (ui::XDisplayExists() &&
       !prefs->HasPrefPath(prefs::kUseCustomChromeFrame)) {
     custom_frame_default = GetCustomFramePrefDefault();
   }
-  prefs->RegisterBooleanPref(
-      prefs::kUseCustomChromeFrame, custom_frame_default);
+  prefs->RegisterBooleanPref(prefs::kUseCustomChromeFrame,
+                             custom_frame_default,
+                             PrefService::SYNCABLE_PREF);
 }
 
 void BrowserWindowGtk::BookmarkBarIsFloating(bool is_floating) {
   bookmark_bar_is_floating_ = is_floating;
   toolbar_->UpdateForBookmarkBarVisibility(is_floating);
 
   // This can be NULL during initialization of the bookmark bar.
   if (bookmark_bar_.get())
     PlaceBookmarkBar(is_floating);
 }
@@ skipping 835 matching lines @@
   // are taken from the WMs' source code.
   return (wm_name == "Blackbox" ||
           wm_name == "compiz" ||
           wm_name == "Compiz" ||
           wm_name == "e16" ||  // Enlightenment DR16
           wm_name == "Metacity" ||
           wm_name == "Mutter" ||
           wm_name == "Openbox" ||
           wm_name == "Xfwm4");
 }