Update <video muted=""> handling to match spec

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 405 matching lines @@
         if (!autoplay() && m_player)
             setPlayerPreload();
 
     } else if (name == mediagroupAttr) {
         setMediaGroup(value);
     } else {
         HTMLElement::parseAttribute(name, value);
     }
 }
 
+void HTMLMediaElement::finishParsingAttributes()
+{
+    if (fastHasAttribute(mutedAttr))
+        m_muted = true;
+}
+
 void HTMLMediaElement::finishParsingChildren()
 {
     HTMLElement::finishParsingChildren();
 
     if (!RuntimeEnabledFeatures::videoTrackEnabled())
         return;
 
     if (Traversal<HTMLTrackElement>::firstChild(*this))
         scheduleDelayedAction(LoadTextTrackResource);
 }
@@ skipping 387 matching lines @@
     WTF_LOG(Media, "HTMLMediaElement::loadResource - m_currentSrc -> %s", urlForLoggingMedia(m_currentSrc).utf8().data());
 
     startProgressEventTimer();
 
     // Reset display mode to force a recalculation of what to show because we are resetting the player.
     setDisplayMode(Unknown);
 
     if (!autoplay())
         setPlayerPreload();
 
-    if (fastHasAttribute(mutedAttr))
-        m_muted = true;
     updateVolume();
 
     ASSERT(!m_mediaSource);
 
     bool attemptLoad = true;
 
     if (url.protocolIs(mediaSourceBlobProtocol)) {
         if (isMediaStreamURL(url.string())) {
             m_userGestureRequiredForPlay = false;
         } else {
@@ skipping 2800 matching lines @@
 {
     m_mediaSource->setWebMediaSourceAndOpen(adoptPtr(webMediaSource));
 }
 
 bool HTMLMediaElement::isInteractiveContent() const
 {
     return fastHasAttribute(controlsAttr);
 }
 
 }