Remove MediaValues' dependency on RenderStyle

Source/core/css/StyleMedia.cpp

 /*
  * Copyright (C) 2009 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 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/css/StyleMedia.h"
 
 #include "core/css/MediaList.h"
 #include "core/css/MediaQueryEvaluator.h"
-#include "core/css/resolver/StyleResolver.h"
 #include "core/dom/Document.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 
 namespace WebCore {
 
 StyleMedia::StyleMedia(LocalFrame* frame)
     : DOMWindowProperty(frame)
 {
 }
@@ skipping 11 matching lines @@
 {
     if (!m_frame)
         return false;
 
     Document* document = m_frame->document();
     ASSERT(document);
     Element* documentElement = document->documentElement();
     if (!documentElement)
         return false;
 
-    StyleResolver& styleResolver = document->ensureStyleResolver();
-    RefPtr<RenderStyle> rootStyle = styleResolver.styleForElement(documentElement, 0 /*defaultParent*/, DisallowStyleSharing, MatchOnlyUserAgentRules);
-
     RefPtrWillBeRawPtr<MediaQuerySet> media = MediaQuerySet::create();
     if (!media->set(query))
         return false;
 
-    MediaQueryEvaluator screenEval(type(), m_frame, rootStyle.get());
+    MediaQueryEvaluator screenEval(type(), m_frame);
     return screenEval.eval(media.get());
 }
 
 } // namespace WebCore