Port messages sent by WebIDBFactoryImpl to Mojo.

third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 40 matching lines @@
   void onBlocked(int64_t existingVersion) override;
   void onUpgradeNeeded(int64_t oldVersion,
                        std::unique_ptr<WebIDBDatabase>,
                        const IDBDatabaseMetadata&,
                        WebIDBDataLoss,
                        String dataLossMessage) override;
   void onSuccess(std::unique_ptr<WebIDBDatabase>,
                  const IDBDatabaseMetadata&) override;
   void onSuccess(int64_t oldVersion) override;
 
+  // ActiveDOMObject
+  void contextDestroyed() final;
+
   // EventTarget
   const AtomicString& interfaceName() const override;
 
   DEFINE_ATTRIBUTE_EVENT_LISTENER(blocked);
   DEFINE_ATTRIBUTE_EVENT_LISTENER(upgradeneeded);
 
  protected:
   bool shouldEnqueueEvent() const override;
 
   // EventTarget
   DispatchEventResult dispatchEventInternal(Event*) override;
 
  private:
   IDBOpenDBRequest(ScriptState*,
                    IDBDatabaseCallbacks*,
                    int64_t transactionId,
                    int64_t version);
 
   Member<IDBDatabaseCallbacks> m_databaseCallbacks;
   const int64_t m_transactionId;
   int64_t m_version;
 };
 
 }  // namespace blink
 
 #endif  // IDBOpenDBRequest_h