Remove task.h and finish base::Bind() migration.

chrome/browser/extensions/settings/settings_leveldb_storage.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_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_LEVELDB_STORAGE_H_
 #define CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_LEVELDB_STORAGE_H_
 #pragma once
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/task.h"
 #include "chrome/browser/extensions/settings/settings_storage.h"
 #include "chrome/browser/extensions/settings/settings_storage_factory.h"
 #include "third_party/leveldatabase/src/include/leveldb/db.h"
 
 namespace extensions {
 
 // Extension settings storage object, backed by a leveldb database.
 //
 // No caching is done; that should be handled by wrapping with an
 // SettingsStorageCache.
@@ skipping 51 matching lines @@
 
   // leveldb backend.
   scoped_ptr<leveldb::DB> db_;
 
   DISALLOW_COPY_AND_ASSIGN(SettingsLeveldbStorage);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_LEVELDB_STORAGE_H_