Shutdown StoragePartition before ProfileIOData is being shut down

chrome/browser/profiles/profile_impl_io_data.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_PROFILES_PROFILE_IMPL_IO_DATA_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_IMPL_IO_DATA_H_
 
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
@@ skipping 129 matching lines @@
     ProfileImplIOData* const io_data_;
 
     Profile* const profile_;
 
     mutable bool initialized_;
 
     DISALLOW_COPY_AND_ASSIGN(Handle);
   };
 
  private:
-  friend class base::RefCountedThreadSafe<ProfileImplIOData>;
-
   struct LazyParams {
     LazyParams();
     ~LazyParams();
 
     // All of these parameters are intended to be read on the IO thread.
     base::FilePath cookie_path;
     base::FilePath channel_id_path;
     base::FilePath cache_path;
     int cache_max_size;
     base::FilePath media_cache_path;
@@ skipping 81 matching lines @@
 
   // Parameters needed for isolated apps.
   base::FilePath profile_path_;
   int app_cache_max_size_;
   int app_media_cache_max_size_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileImplIOData);
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_IMPL_IO_DATA_H_