Notify <picture> elements when a media query (potentially) changes

Source/core/html/HTMLImageElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 225 matching lines @@
             continue;
 
         HTMLSourceElement* source = toHTMLSourceElement(child);
         String srcset = source->fastGetAttribute(srcsetAttr);
         if (srcset.isEmpty())
             continue;
         String type = source->fastGetAttribute(typeAttr);
         if (!type.isEmpty() && !supportedImageType(type))
             continue;
 
-        String media = source->fastGetAttribute(mediaAttr);
-        if (!media.isEmpty()) {
-            RefPtrWillBeRawPtr<MediaQuerySet> mediaQueries = MediaQuerySet::create(media);
-            if (!document().mediaQueryMatcher().evaluate(mediaQueries.get()))
-                continue;
-        }
+        if (!source->mediaQueryMatches())
+            continue;
 
         unsigned effectiveSize = SizesAttributeParser::findEffectiveSize(source->fastGetAttribute(sizesAttr), MediaValuesDynamic::create(document()));
         ImageCandidate candidate = bestFitSourceForSrcsetAttribute(document().devicePixelRatio(), effectiveSize, source->fastGetAttribute(srcsetAttr));
         if (candidate.isEmpty())
             continue;
         return candidate;
     }
     return ImageCandidate();
 }
 
@@ skipping 325 matching lines @@
     else
         imageLoader().updateFromElement();
 }
 
 const KURL& HTMLImageElement::sourceURL() const
 {
     return cachedImage()->response().url();
 }
 
 }