Move MediaQuery classes off BlinkGC heap

third_party/WebKit/Source/core/loader/LinkLoader.cpp

Index: third_party/WebKit/Source/core/loader/LinkLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/LinkLoader.cpp b/third_party/WebKit/Source/core/loader/LinkLoader.cpp
index 5ec551969b5076932235602689e420de4380cfca..bf4b5478fe53186439b8d1464a66d5e5af67afba 100644
--- a/third_party/WebKit/Source/core/loader/LinkLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/LinkLoader.cpp
@@ -294,9 +294,9 @@ static Resource* preloadIfNeeded(const LinkRelAttribute& relAttribute,
     }
 
     // Preload only if media matches
-    MediaQuerySet* mediaQueries = MediaQuerySet::create(media);
+    RefPtr<MediaQuerySet> mediaQueries = MediaQuerySet::create(media);
     MediaQueryEvaluator evaluator(*mediaValues);
-    if (!evaluator.eval(mediaQueries))
+    if (!evaluator.eval(*mediaQueries))
       return nullptr;
   }
   if (caller == LinkCalledFromHeader)