Make ExtensionContentSettingsStore refcounted.

chrome/browser/profiles/profile.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/profiles/profile.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
@@ skipping 256 matching lines @@
     // Clean up all DB files/directories
     if (db_tracker_)
       BrowserThread::PostTask(
           BrowserThread::FILE, FROM_HERE,
           NewRunnableMethod(
               db_tracker_.get(),
               &webkit_database::DatabaseTracker::DeleteIncognitoDBDirectory));
 
     BrowserList::RemoveObserver(this);
 
+    if (host_content_settings_map_)
+      host_content_settings_map_->ShutdownOnUIThread();
+
     if (pref_proxy_config_tracker_)
       pref_proxy_config_tracker_->DetachFromPrefService();
 
     ExtensionService* extension_service = GetExtensionService();
     if (extension_service) {
       ExtensionPrefs* extension_prefs = extension_service->extension_prefs();
       extension_prefs->ClearIncognitoSessionOnlyContentSettings();
     }
   }
 
@@ skipping 560 matching lines @@
 };
 #endif
 
 Profile* Profile::CreateOffTheRecordProfile() {
 #if defined(OS_CHROMEOS)
   if (Profile::IsGuestSession())
     return new GuestSessionProfile(this);
 #endif
   return new OffTheRecordProfileImpl(this);
 }