Handle inconsistency between DB and Files

webkit/fileapi/file_system_quota_util.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_QUOTA_UTIL_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_
 
 #include <set>
 #include <string>
 
@@ skipping 73 matching lines @@
   // Called by quota_file_util or file_writer_delegate.
   // Called before a write operation modifies the origin's storage data.
   virtual void StartUpdateOriginOnFileThread(const GURL& origin_url,
                                              fileapi::FileSystemType type) = 0;
 
   // Called by quota_file_util or file_writer_delegate.
   // Called after a write operation modifies the origin's storage data.
   virtual void EndUpdateOriginOnFileThread(const GURL& origin_url,
                                            fileapi::FileSystemType type) = 0;
 
+  virtual void InvalidateUsageCache(const GURL& origin_url,
+                                    fileapi::FileSystemType type) = 0;
+
   Proxy* proxy() { return proxy_.get(); }
 
  protected:
   explicit FileSystemQuotaUtil(base::MessageLoopProxy* file_thread);
   virtual ~FileSystemQuotaUtil();
 
  private:
   scoped_refptr<Proxy> proxy_;
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_QUOTA_UTIL_H_