Oilpan: Mark TrackDisplayUpdateScope STACK_ALLOCATED

Source/core/html/HTMLMediaElement.cpp

 /*
  * 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 133 matching lines @@
 static void removeElementFromDocumentMap(HTMLMediaElement* element, Document* document)
 {
     DocumentElementSetMap& map = documentToElementSetMap();
     WeakMediaElementSet set = map.take(document);
     set.remove(element);
     if (!set.isEmpty())
         map.add(document, set);
 }
 
 class TrackDisplayUpdateScope {
+    STACK_ALLOCATED();
 public:
     TrackDisplayUpdateScope(HTMLMediaElement* mediaElement)
     {
         m_mediaElement = mediaElement;
         m_mediaElement->beginIgnoringTrackDisplayUpdateRequests();
     }
     ~TrackDisplayUpdateScope()
     {
         ASSERT(m_mediaElement);
         m_mediaElement->endIgnoringTrackDisplayUpdateRequests();
     }
 
 private:
-    HTMLMediaElement* m_mediaElement;
+    RawPtrWillBeMember<HTMLMediaElement> m_mediaElement;
 };
 
 static const AtomicString& AudioKindToString(WebMediaPlayerClient::AudioTrackKind kind)
 {
     switch (kind) {
     case WebMediaPlayerClient::AudioTrackKindNone:
         return emptyAtom;
     case WebMediaPlayerClient::AudioTrackKindAlternative:
         return AudioTrack::alternativeKeyword();
     case WebMediaPlayerClient::AudioTrackKindDescriptions:
@@ skipping 3771 matching lines @@
 
 #if ENABLE(WEB_AUDIO)
 void HTMLMediaElement::clearWeakMembers(Visitor* visitor)
 {
     if (!visitor->isAlive(m_audioSourceNode) && audioSourceProvider())
         audioSourceProvider()->setClient(0);
 }
 #endif
 
 }