Revert 67662 - FBTF: Remove unneeded headers from base/ (part 10)...

chrome/browser/browsing_data_appcache_helper.h

 // Copyright (c) 2010 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_BROWSING_DATA_APPCACHE_HELPER_H_
 #define CHROME_BROWSER_BROWSING_DATA_APPCACHE_HELPER_H_
 #pragma once
 
 #include "base/scoped_ptr.h"
+#include "base/task.h"
 #include "chrome/browser/appcache/chrome_appcache_service.h"
 #include "chrome/common/net/url_request_context_getter.h"
 #include "googleurl/src/gurl.h"
 
 class Profile;
 
 // This class fetches appcache information on behalf of a caller
 // on the UI thread.
 class BrowsingDataAppCacheHelper
     : public base::RefCountedThreadSafe<BrowsingDataAppCacheHelper> {
@@ skipping 49 matching lines @@
   virtual void StartFetching(Callback0::Type* completion_callback);
   virtual void CancelNotification() {}
 
  private:
   virtual ~CannedBrowsingDataAppCacheHelper();
 
   DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataAppCacheHelper);
 };
 
 #endif  // CHROME_BROWSER_BROWSING_DATA_APPCACHE_HELPER_H_