[WIP] Re-implement MediaControls in Blink-in-JS

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 42 matching lines @@
     if (!mediaNode)
         mediaNode = node;
     if (!isHTMLMediaElement(mediaNode))
         return 0;
 
     return toHTMLMediaElement(mediaNode);
 }
 
 MediaControlElementType mediaControlElementType(Node* node)
 {
-    ASSERT_WITH_SECURITY_IMPLICATION(node->isMediaControlElement());
+    // TODO: Enable this assertion again
+    //ASSERT_WITH_SECURITY_IMPLICATION(node->isMediaControlElement());
     HTMLElement* element = toHTMLElement(node);
     if (isHTMLInputElement(*element))
         return static_cast<MediaControlInputElement*>(element)->displayType();
     return static_cast<MediaControlDivElement*>(element)->displayType();
 }
 
 MediaControlElement::MediaControlElement(MediaControls& mediaControls, MediaControlElementType displayType, HTMLElement* element)
     : m_mediaControls(mediaControls)
     , m_displayType(displayType)
     , m_element(element)
@@ skipping 70 matching lines @@
     , m_currentValue(0)
 {
 }
 
 void MediaControlTimeDisplayElement::setCurrentValue(double time)
 {
     m_currentValue = time;
 }
 
 } // namespace blink