Introduce Element::AttributeModificationParams

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 146 matching lines @@
   if (!m_mediaQueryList)
     return true;
 
   return m_mediaQueryList->matches();
 }
 
 bool HTMLSourceElement::isURLAttribute(const Attribute& attribute) const {
   return attribute.name() == srcAttr || HTMLElement::isURLAttribute(attribute);
 }
 
-void HTMLSourceElement::parseAttribute(const QualifiedName& name,
-                                       const AtomicString& oldValue,
-                                       const AtomicString& value) {
-  HTMLElement::parseAttribute(name, oldValue, value);
+void HTMLSourceElement::parseAttribute(
+    const AttributeModificationParams& params) {
+  HTMLElement::parseAttribute(params);
+  const QualifiedName& name = params.name;
   if (name == mediaAttr)
-    createMediaQueryList(value);
+    createMediaQueryList(params.newValue);
   if (name == srcsetAttr || name == sizesAttr || name == mediaAttr ||
       name == typeAttr) {
     Element* parent = parentElement();
     if (isHTMLPictureElement(parent))
       toHTMLPictureElement(parent)->sourceOrMediaChanged();
   }
 }
 
 void HTMLSourceElement::notifyMediaQueryChanged() {
   Element* parent = parentElement();
   if (isHTMLPictureElement(parent))
     toHTMLPictureElement(parent)->sourceOrMediaChanged();
 }
 
 DEFINE_TRACE(HTMLSourceElement) {
   visitor->trace(m_mediaQueryList);
   visitor->trace(m_listener);
   HTMLElement::trace(visitor);
 }
 
 }  // namespace blink