Revert of Remove unnecessary uses of GarbageCollectedFinalized<>.

third_party/WebKit/Source/modules/encryptedmedia/MediaKeys.cpp

 /*
  * Copyright (C) 2013 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 24 matching lines @@
 #include "modules/encryptedmedia/MediaKeySession.h"
 #include "modules/encryptedmedia/SimpleContentDecryptionModuleResultPromise.h"
 #include "platform/Logging.h"
 #include "platform/Timer.h"
 #include "public/platform/WebContentDecryptionModule.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 // A class holding a pending action.
-class MediaKeys::PendingAction final : public GarbageCollected<MediaKeys::PendingAction> {
+class MediaKeys::PendingAction : public GarbageCollectedFinalized<MediaKeys::PendingAction> {
 public:
     const Persistent<ContentDecryptionModuleResult> result() const
     {
         return m_result;
     }
 
     DOMArrayBuffer* data() const
     {
         return m_data;
     }
 
     static PendingAction* CreatePendingSetServerCertificate(ContentDecryptionModuleResult* result, DOMArrayBuffer* serverCertificate)
     {
         ASSERT(result);
         ASSERT(serverCertificate);
         return new PendingAction(result, serverCertificate);
     }
 
+    ~PendingAction()
+    {
+    }
+
     DEFINE_INLINE_TRACE()
     {
         visitor->trace(m_result);
         visitor->trace(m_data);
     }
 
 private:
     PendingAction(ContentDecryptionModuleResult* result, DOMArrayBuffer* data)
         : m_result(result)
         , m_data(data)
@@ skipping 188 matching lines @@
 void MediaKeys::stop()
 {
     ActiveDOMObject::stop();
 
     if (m_timer.isActive())
         m_timer.stop();
     m_pendingActions.clear();
 }
 
 } // namespace blink