Move MediaQuery classes off BlinkGC heap

third_party/WebKit/Source/core/css/StyleRuleImport.h

Index: third_party/WebKit/Source/core/css/StyleRuleImport.h
diff --git a/third_party/WebKit/Source/core/css/StyleRuleImport.h b/third_party/WebKit/Source/core/css/StyleRuleImport.h
index 0e2242eb2a42331062961494faaad7d175bc5d4b..0d8134c8416f03c09733f4400f1c47a9c940551a 100644
--- a/third_party/WebKit/Source/core/css/StyleRuleImport.h
+++ b/third_party/WebKit/Source/core/css/StyleRuleImport.h
@@ -36,7 +36,7 @@ class StyleRuleImport : public StyleRuleBase {
   USING_PRE_FINALIZER(StyleRuleImport, Dispose);
 
  public:
-  static StyleRuleImport* Create(const String& href, MediaQuerySet*);
+  static StyleRuleImport* Create(const String& href, RefPtr<MediaQuerySet>);
 
   ~StyleRuleImport();
 
@@ -96,7 +96,7 @@ class StyleRuleImport : public StyleRuleBase {
                         const String& charset,
                         const CSSStyleSheetResource*);
 
-  StyleRuleImport(const String& href, MediaQuerySet*);
+  StyleRuleImport(const String& href, RefPtr<MediaQuerySet>);
 
   void Dispose();
 
@@ -104,7 +104,7 @@ class StyleRuleImport : public StyleRuleBase {
 
   Member<ImportedStyleSheetClient> style_sheet_client_;
   String str_href_;
-  Member<MediaQuerySet> media_queries_;
+  RefPtr<MediaQuerySet> media_queries_;
   Member<StyleSheetContents> style_sheet_;
   Member<CSSStyleSheetResource> resource_;
   bool loading_;