Remove MediaQueryList listener from removed HTMLSourceElement.

third_party/WebKit/Source/core/html/HTMLSourceElement.cpp

 /*
  * Copyright (C) 2007, 2008, 2010 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 97 matching lines @@
     return InsertionDone;
 }
 
 void HTMLSourceElement::removedFrom(ContainerNode* removalRoot)
 {
     Element* parent = parentElement();
     if (!parent && removalRoot->isElementNode())
         parent = toElement(removalRoot);
     if (isHTMLMediaElement(parent))
         toHTMLMediaElement(parent)->sourceWasRemoved(this);
-    if (isHTMLPictureElement(parent))
+    if (isHTMLPictureElement(parent)) {
+        if (m_mediaQueryList)
+            m_mediaQueryList->removeListener(m_listener);
         toHTMLPictureElement(parent)->sourceOrMediaChanged();
+    }
     HTMLElement::removedFrom(removalRoot);
 }
 
+void HTMLSourceElement::notifyImgSiblingRemoved()
+{
+    if (m_mediaQueryList)
+        m_mediaQueryList->removeListener(m_listener);
+}
+
 void HTMLSourceElement::setSrc(const String& url)
 {
     setAttribute(srcAttr, AtomicString(url));
 }
 
 const AtomicString& HTMLSourceElement::type() const
 {
     return getAttribute(typeAttr);
 }
 
@@ skipping 54 matching lines @@
 }
 
 DEFINE_TRACE(HTMLSourceElement)
 {
     visitor->trace(m_mediaQueryList);
     visitor->trace(m_listener);
     HTMLElement::trace(visitor);
 }
 
 } // namespace blink