Move MediaQuery classes off BlinkGC heap

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

Index: third_party/WebKit/Source/core/css/StyleRule.cpp
diff --git a/third_party/WebKit/Source/core/css/StyleRule.cpp b/third_party/WebKit/Source/core/css/StyleRule.cpp
index bcc1c054f2aa0e4066f08634134b1284e2dc05c6..152a70f2e4ad86e9ef788c3a90e879ae4eb0870b 100644
--- a/third_party/WebKit/Source/core/css/StyleRule.cpp
+++ b/third_party/WebKit/Source/core/css/StyleRule.cpp
@@ -353,7 +353,7 @@ StyleRuleCondition::StyleRuleCondition(const StyleRuleCondition& condition_rule)
     : StyleRuleGroup(condition_rule),
       condition_text_(condition_rule.condition_text_) {}
 
-StyleRuleMedia::StyleRuleMedia(MediaQuerySet* media,
+StyleRuleMedia::StyleRuleMedia(RefPtr<MediaQuerySet> media,
                                HeapVector<Member<StyleRuleBase>>& adopt_rules)
     : StyleRuleCondition(kMedia, adopt_rules), media_queries_(media) {}
 
@@ -363,11 +363,6 @@ StyleRuleMedia::StyleRuleMedia(const StyleRuleMedia& media_rule)
     media_queries_ = media_rule.media_queries_->Copy();
 }
 
-DEFINE_TRACE_AFTER_DISPATCH(StyleRuleMedia) {
-  visitor->Trace(media_queries_);
-  StyleRuleCondition::TraceAfterDispatch(visitor);
-}
-
 StyleRuleSupports::StyleRuleSupports(
     const String& condition_text,
     bool condition_is_supported,
@@ -375,6 +370,10 @@ StyleRuleSupports::StyleRuleSupports(
     : StyleRuleCondition(kSupports, condition_text, adopt_rules),
       condition_is_supported_(condition_is_supported) {}
 
+DEFINE_TRACE_AFTER_DISPATCH(StyleRuleMedia) {
+  StyleRuleCondition::TraceAfterDispatch(visitor);
+}
+
 StyleRuleSupports::StyleRuleSupports(const StyleRuleSupports& supports_rule)
     : StyleRuleCondition(supports_rule),
       condition_is_supported_(supports_rule.condition_is_supported_) {}