Use base::Callback in Quota related code.

webkit/appcache/appcache_storage_impl.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 WEBKIT_APPCACHE_APPCACHE_STORAGE_IMPL_H_
 #define WEBKIT_APPCACHE_APPCACHE_STORAGE_IMPL_H_
 
 #include <deque>
 #include <map>
 #include <set>
+#include <utility>
 #include <vector>
 
 #include "base/file_path.h"
 #include "base/message_loop_proxy.h"
 #include "base/task.h"
 #include "webkit/appcache/appcache_database.h"
 #include "webkit/appcache/appcache_disk_cache.h"
 #include "webkit/appcache/appcache_export.h"
 #include "webkit/appcache/appcache_storage.h"
 
@@ skipping 143 matching lines @@
   // any tasks on the background database thread.
   std::deque<Task*> pending_simple_tasks_;
   ScopedRunnableMethodFactory<AppCacheStorageImpl> method_factory_;
 
   friend class ChromeAppCacheServiceTest;
 };
 
 }  // namespace appcache
 
 #endif  // WEBKIT_APPCACHE_APPCACHE_STORAGE_IMPL_H_