Implement DatabaseQuotaClient's DeteleteOriginData method.

webkit/database/database_quota_client.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_DATABASE_DATABASE_QUOTA_CLIENT_H_
 #define WEBKIT_DATABASE_DATABASE_QUOTA_CLIENT_H_
 
 #include <set>
 #include <string>
 
@@ skipping 31 matching lines @@
                                  GetOriginsCallback* callback)  OVERRIDE;
   virtual void DeleteOriginData(const GURL& origin,
                                 quota::StorageType type,
                                 DeletionCallback* callback) OVERRIDE;
  private:
   class HelperTask;
   class GetOriginUsageTask;
   class GetOriginsTaskBase;
   class GetAllOriginsTask;
   class GetOriginsForHostTask;
+  class DeleteOriginTask;
 
   typedef quota::CallbackQueueMap1
       <GetUsageCallback*,
        GURL,  // origin
        int64
       > UsageForOriginCallbackMap;
   typedef quota::CallbackQueue1
       <GetOriginsCallback*,
        const std::set<GURL>&
       > OriginsForTypeCallbackQueue;
@@ skipping 13 matching lines @@
   UsageForOriginCallbackMap usage_for_origin_callbacks_;
   OriginsForTypeCallbackQueue origins_for_type_callbacks_;
   OriginsForHostCallbackMap origins_for_host_callbacks_;
 
   DISALLOW_COPY_AND_ASSIGN(DatabaseQuotaClient);
 };
 
 }  // namespace webkit_database
 
 #endif  // WEBKIT_DATABASE_DATABASE_QUOTA_CLIENT_H_