Remove unused fields found by clang's new Wunused-private-fields.

chrome/browser/mock_browsing_data_local_storage_helper.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_MOCK_BROWSING_DATA_LOCAL_STORAGE_HELPER_H_
 #define CHROME_BROWSER_MOCK_BROWSING_DATA_LOCAL_STORAGE_HELPER_H_
 #pragma once
 
 #include <list>
 #include <map>
@@ skipping 27 matching lines @@
 
   // Returns true if all local storage files were deleted since the last Reset()
   // invocation.
   bool AllDeleted();
 
   GURL last_deleted_origin_;
 
  private:
   virtual ~MockBrowsingDataLocalStorageHelper();
 
-  Profile* profile_;
-
   base::Callback<void(const std::list<LocalStorageInfo>&)> callback_;
 
   std::map<const GURL, bool> origins_;
 
   std::list<LocalStorageInfo> response_;
 };
 
 #endif  // CHROME_BROWSER_MOCK_BROWSING_DATA_LOCAL_STORAGE_HELPER_H_