Move MediaQuery classes off BlinkGC heap

third_party/WebKit/Source/core/css/MediaQueryMatcher.cpp

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  *  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.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 48 matching lines @@
   ASSERT(!m_document || m_document->frame() || !m_evaluator);
 
   if (!media)
     return false;
 
   // Cache the evaluator to avoid allocating one per evaluation.
   if (!m_evaluator)
     m_evaluator = createEvaluator();
 
   if (m_evaluator)
-    return m_evaluator->eval(media);
+    return m_evaluator->eval(*media);
 
   return false;
 }
 
 MediaQueryList* MediaQueryMatcher::matchMedia(const String& query) {
   if (!m_document)
     return nullptr;
 
-  MediaQuerySet* media = MediaQuerySet::create(query);
+  RefPtr<MediaQuerySet> media = MediaQuerySet::create(query);
   return MediaQueryList::create(m_document, this, media);
 }
 
 void MediaQueryMatcher::addMediaQueryList(MediaQueryList* query) {
   if (!m_document)
     return;
   m_mediaLists.insert(query);
 }
 
 void MediaQueryMatcher::removeMediaQueryList(MediaQueryList* query) {
@@ skipping 42 matching lines @@
 }
 
 DEFINE_TRACE(MediaQueryMatcher) {
   visitor->trace(m_document);
   visitor->trace(m_evaluator);
   visitor->trace(m_mediaLists);
   visitor->trace(m_viewportListeners);
 }
 
 }  // namespace blink