Add picture related attributes to Source

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 71 matching lines @@
 void HTMLSourceElement::setSrc(const String& url)
 {
     setAttribute(srcAttr, AtomicString(url));
 }
 
 const AtomicString& HTMLSourceElement::type() const
 {
     return getAttribute(typeAttr);
 }
 
+const AtomicString& HTMLSourceElement::media() const
+{
+    return getAttribute(mediaAttr);
+}
+
+const AtomicString& HTMLSourceElement::srcset() const
+{
+    return getAttribute(srcsetAttr);
+}
+
+const AtomicString& HTMLSourceElement::sizes() const
+{
+    return getAttribute(sizesAttr);
+}
+
 void HTMLSourceElement::setType(const AtomicString& type)
 {
     setAttribute(typeAttr, type);
 }
 
 void HTMLSourceElement::scheduleErrorEvent()
 {
     WTF_LOG(Media, "HTMLSourceElement::scheduleErrorEvent - %p", this);
     sourceErrorEventSender().dispatchEventSoon(this);
 }
@@ skipping 10 matching lines @@
     WTF_LOG(Media, "HTMLSourceElement::dispatchPendingEvent - %p", this);
     dispatchEvent(Event::createCancelable(EventTypeNames::error));
 }
 
 bool HTMLSourceElement::isURLAttribute(const Attribute& attribute) const
 {
     return attribute.name() == srcAttr || HTMLElement::isURLAttribute(attribute);
 }
 
 }