Adding `browsing_data_filesystem_helper*` as the first step towards content settings UI.

chrome/test/testing_profile.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.
 
 #ifndef CHROME_TEST_TESTING_PROFILE_H_
 #define CHROME_TEST_TESTING_PROFILE_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 364 matching lines @@
   // invoked.
   scoped_ptr<ExtensionPrefs> extension_prefs_;
 
   scoped_ptr<ExtensionService> extension_service_;
 
   scoped_ptr<ExtensionPrefValueMap> extension_pref_value_map_;
 
   scoped_refptr<ExtensionSpecialStoragePolicy>
       extension_special_storage_policy_;
 
+  // FileSystemContext.  Created lazily by GetFileSystemContext().
+  scoped_refptr<fileapi::FileSystemContext> file_system_context_;
+
   // The proxy prefs tracker.
   scoped_refptr<PrefProxyConfigTracker> pref_proxy_config_tracker_;
 
   // We use a temporary directory to store testing profile data.
   ScopedTempDir temp_dir_;
 
   scoped_ptr<ChromeURLDataManager> chrome_url_data_manager_;
 
   scoped_ptr<prerender::PrerenderManager> prerender_manager_;
 
@@ skipping 11 matching lines @@
   explicit DerivedTestingProfile(Profile* profile);
   virtual ~DerivedTestingProfile();
 
   virtual ProfileId GetRuntimeId();
 
  protected:
   Profile* original_profile_;
 };
 
 #endif  // CHROME_TEST_TESTING_PROFILE_H_