Oilpan: trace MediaControlElement's element reference.

Source/core/html/shadow/MediaControlElementTypes.cpp

 /*
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * 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.
@@ skipping 81 matching lines @@
 void MediaControlElement::setDisplayType(MediaControlElementType displayType)
 {
     if (displayType == m_displayType)
         return;
 
     m_displayType = displayType;
     if (RenderObject* object = m_element->renderer())
         object->paintInvalidationForWholeRenderer();
 }
 
+void MediaControlElement::trace(Visitor* visitor)
+{
+    visitor->trace(m_element);
+}
+
 // ----------------------------
 
 MediaControlDivElement::MediaControlDivElement(MediaControls& mediaControls, MediaControlElementType displayType)
     : HTMLDivElement(mediaControls.document())
     , MediaControlElement(mediaControls, displayType, this)
 {
 }
 
+void MediaControlDivElement::trace(Visitor* visitor)
+{
+    MediaControlElement::trace(visitor);
+    HTMLDivElement::trace(visitor);
+}
+
 // ----------------------------
 
 MediaControlInputElement::MediaControlInputElement(MediaControls& mediaControls, MediaControlElementType displayType)
     : HTMLInputElement(mediaControls.document(), 0, false)
     , MediaControlElement(mediaControls, displayType, this)
 {
 }
 
 bool MediaControlInputElement::isMouseFocusable() const
 {
     return false;
 }
 
+void MediaControlInputElement::trace(Visitor* visitor)
+{
+    MediaControlElement::trace(visitor);
+    HTMLInputElement::trace(visitor);
+}
+
 // ----------------------------
 
 MediaControlTimeDisplayElement::MediaControlTimeDisplayElement(MediaControls& mediaControls, MediaControlElementType displayType)
     : MediaControlDivElement(mediaControls, displayType)
     , m_currentValue(0)
 {
 }
 
 void MediaControlTimeDisplayElement::setCurrentValue(double time)
 {
     m_currentValue = time;
 }
 
 } // namespace WebCore