Refactor preference syncing.

chrome/browser/debugger/devtools_manager.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/debugger/devtools_manager.h"
 
 #include <vector>
 
 #include "base/auto_reset.h"
 #include "base/message_loop.h"
@@ skipping 18 matching lines @@
 DevToolsManager* DevToolsManager::GetInstance() {
   // http://crbug.com/47806 this method may be called when BrowserProcess
   // has already been destroyed.
   if (!g_browser_process)
     return NULL;
   return g_browser_process->devtools_manager();
 }
 
 // static
 void DevToolsManager::RegisterUserPrefs(PrefService* prefs) {
-  prefs->RegisterBooleanPref(prefs::kDevToolsOpenDocked, true);
+  prefs->RegisterBooleanPref(prefs::kDevToolsOpenDocked,
+                             true,
+                             PrefService::UNSYNCABLE_PREF);
 }
 
 DevToolsManager::DevToolsManager()
     : inspected_rvh_for_reopen_(NULL),
       in_initial_show_(false),
       last_orphan_cookie_(0) {
   registrar_.Add(this, NotificationType::RENDER_VIEW_HOST_DELETED,
                  NotificationService::AllSources());
 }
 
@@ skipping 405 matching lines @@
   for (InspectedRvhToClientHostMap::iterator it =
            inspected_rvh_to_client_host_.begin();
        it != inspected_rvh_to_client_host_.end(); ++it) {
     rhvs.push_back(it->first);
   }
   for (std::vector<RenderViewHost*>::iterator it = rhvs.begin();
        it != rhvs.end(); ++it) {
     UnregisterDevToolsClientHostFor(*it);
   }
 }