redesign and reimplement proxy config service and tracker, revise proxy ui on cros

chrome/browser/profiles/profile_impl.h

 // 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.
 
 // This class gathers state related to a single user profile.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_
 #pragma once
 
@@ skipping 264 matching lines @@
 
 #if defined(OS_CHROMEOS)
   scoped_ptr<chromeos::Preferences> chromeos_preferences_;
 
   scoped_ptr<chromeos::EnterpriseExtensionObserver>
       chromeos_enterprise_extension_observer_;
 
   scoped_ptr<chromeos::LocaleChangeGuard> locale_change_guard_;
 #endif
 
-  scoped_refptr<PrefProxyConfigTracker> pref_proxy_config_tracker_;
+  scoped_ptr<PrefProxyConfigTracker> pref_proxy_config_tracker_;
 
   scoped_ptr<ChromeURLDataManager> chrome_url_data_manager_;
 
   Profile::Delegate* delegate_;
 
   chrome_browser_net::Predictor* predictor_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileImpl);
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_IMPL_H_