Oilpan: fix build after r199375.

Source/core/html/HTMLMediaElement.h

 /*
  * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 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 568 matching lines @@
 
         DECLARE_TRACE();
 
     private:
         Member<AudioSourceProviderClient> m_client;
     };
 
     // AudioSourceProviderImpl wraps a WebAudioSourceProvider.
     // provideInput() calls into Chromium to get a rendered audio stream.
     class AudioSourceProviderImpl final : public AudioSourceProvider {
+        DISALLOW_ALLOCATION();
     public:
         AudioSourceProviderImpl()
             : m_webAudioSourceProvider(nullptr)
         {
         }
 
         ~AudioSourceProviderImpl() override { }
 
         // Wraps the given WebAudioSourceProvider.
         void wrap(WebAudioSourceProvider*);
 
         // AudioSourceProvider
         void setClient(AudioSourceProviderClient*) override;
         void provideInput(AudioBus*, size_t framesToProcess) override;
 
+        DECLARE_TRACE();
+
     private:
         WebAudioSourceProvider* m_webAudioSourceProvider;
-        Persistent<AudioClientImpl> m_client;
+        PersistentWillBeMember<AudioClientImpl> m_client;
         Mutex provideInputLock;
     };
 
     AudioSourceProviderImpl m_audioSourceProvider;
 #endif
 
     friend class MediaController;
     PersistentWillBeMember<MediaController> m_mediaController;
 
     friend class Internals;
     friend class TrackDisplayUpdateScope;
 
     static URLRegistry* s_mediaStreamRegistry;
 };
 
 inline bool isHTMLMediaElement(const HTMLElement& element)
 {
     return isHTMLAudioElement(element) || isHTMLVideoElement(element);
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLMediaElement);
 
 } // namespace blink
 
 #endif // HTMLMediaElement_h