Refactor preference syncing.

chrome/browser/ui/views/browser_actions_container.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/views/browser_actions_container.h"
 
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_browser_event_router.h"
@@ skipping 373 matching lines @@
 BrowserActionsContainer::~BrowserActionsContainer() {
   if (model_)
     model_->RemoveObserver(this);
   StopShowFolderDropMenuTimer();
   HidePopup();
   DeleteBrowserActionViews();
 }
 
 // Static.
 void BrowserActionsContainer::RegisterUserPrefs(PrefService* prefs) {
-  prefs->RegisterIntegerPref(prefs::kBrowserActionContainerWidth, 0);
+  prefs->RegisterIntegerPref(prefs::kBrowserActionContainerWidth,
+                             0,
+                             PrefService::UNSYNCABLE_PREF);
 }
 
 void BrowserActionsContainer::Init() {
   LoadImages();
 
   // We wait to set the container width until now so that the chevron images
   // will be loaded.  The width calculation needs to know the chevron size.
   if (model_ &&
       !profile_->GetPrefs()->HasPrefPath(prefs::kExtensionToolbarSize)) {
     // Migration code to the new VisibleIconCount pref.
@@ skipping 688 matching lines @@
   }
 }
 
 bool BrowserActionsContainer::ShouldDisplayBrowserAction(
     const Extension* extension) {
   // Only display incognito-enabled extensions while in incognito mode.
   return
       (!profile_->IsOffTheRecord() ||
        profile_->GetExtensionService()->IsIncognitoEnabled(extension->id()));
 }