Unwire the clear on exit preference from the storage systems.

chrome/browser/net/chrome_url_request_context.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_NET_CHROME_URL_REQUEST_CONTEXT_H_
 #define CHROME_BROWSER_NET_CHROME_URL_REQUEST_CONTEXT_H_
 #pragma once
 
 #include <string>
 
@@ skipping 155 matching lines @@
   virtual ~ChromeURLRequestContextGetter();
 
   // Registers an observer on |profile|'s preferences which will be used
   // to update the context when the default language and charset change.
   void RegisterPrefsObserver(Profile* profile);
 
   // These methods simply forward to the corresponding method on
   // ChromeURLRequestContext.
   void OnAcceptLanguageChange(const std::string& accept_language);
   void OnDefaultCharsetChange(const std::string& default_charset);
-  void OnClearSiteDataOnExitChange(bool clear_site_data);
 
   PrefChangeRegistrar registrar_;
 
   // Deferred logic for creating a ChromeURLRequestContext.
   // Access only from the IO thread.
   scoped_ptr<ChromeURLRequestContextFactory> factory_;
 
   // NULL if not yet initialized. Otherwise, it is the ChromeURLRequestContext
   // instance that was lazily created by GetURLRequestContext().
   // Access only from the IO thread.
   base::WeakPtr<ChromeURLRequestContext> url_request_context_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeURLRequestContextGetter);
 };
 
 #endif  // CHROME_BROWSER_NET_CHROME_URL_REQUEST_CONTEXT_H_