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 @@
   DCHECK(!document_ || document_->GetFrame() || !evaluator_);
 
   if (!media)
     return false;
 
   // Cache the evaluator to avoid allocating one per evaluation.
   if (!evaluator_)
     evaluator_ = CreateEvaluator();
 
   if (evaluator_)
-    return evaluator_->Eval(media);
+    return evaluator_->Eval(*media);
 
   return false;
 }
 
 MediaQueryList* MediaQueryMatcher::MatchMedia(const String& query) {
   if (!document_)
     return nullptr;
 
-  MediaQuerySet* media = MediaQuerySet::Create(query);
+  RefPtr<MediaQuerySet> media = MediaQuerySet::Create(query);
   return MediaQueryList::Create(document_, this, media);
 }
 
 void MediaQueryMatcher::AddMediaQueryList(MediaQueryList* query) {
   if (!document_)
     return;
   media_lists_.insert(query);
 }
 
 void MediaQueryMatcher::RemoveMediaQueryList(MediaQueryList* query) {
@@ skipping 42 matching lines @@
 }
 
 DEFINE_TRACE(MediaQueryMatcher) {
   visitor->Trace(document_);
   visitor->Trace(evaluator_);
   visitor->Trace(media_lists_);
   visitor->Trace(viewport_listeners_);
 }
 
 }  // namespace blink