Handle inconsistency between DB and Files

webkit/fileapi/file_system_context.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_FILEAPI_FILE_SYSTEM_CONTEXT_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_CONTEXT_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "webkit/fileapi/file_system_types.h"
@@ skipping 37 matching lines @@
       bool unlimited_quota,
       FileSystemPathManager* path_manager);
   ~FileSystemContext();
 
   // This method can be called on any thread.
   bool IsStorageUnlimited(const GURL& origin);
 
   bool DeleteDataForOriginOnFileThread(const GURL& origin_url);
   bool DeleteDataForOriginAndTypeOnFileThread(const GURL& origin_url,
                                               FileSystemType type);
+  void RecalculateUsage(const GURL& origin_url, FileSystemType type);
 
   FileSystemPathManager* path_manager() const { return path_manager_.get(); }
   quota::QuotaManagerProxy* quota_manager_proxy() const {
     return quota_manager_proxy_.get();
   }
 
   // Returns a quota util for a given filesystem type.  This may
   // return NULL if the type does not support the usage tracking or
   // it is not a quota-managed storage.
   FileSystemQuotaUtil* GetQuotaUtil(FileSystemType type) const;
@@ skipping 18 matching lines @@
 
 struct DefaultContextDeleter {
   static void Destruct(const FileSystemContext* context) {
     context->DeleteOnCorrectThread();
   }
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_CONTEXT_H_