Make ImportedStyleSheetClient GarbageCollected

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 705acf8553f261015fb344e38ede3d3ead8d6a43..64cad61a54aee655c1336b7ee4eb924252bf582b 100644
--- a/third_party/WebKit/Source/core/css/StyleRuleImport.h
+++ b/third_party/WebKit/Source/core/css/StyleRuleImport.h
@@ -54,11 +54,10 @@ public:
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
-    // FIXME: inherit from StyleSheetResourceClient directly to eliminate raw back pointer, as there are no space savings in this.
+    // FIXME: inherit from StyleSheetResourceClient directly to eliminate back pointer, as there are no space savings in this.
     // NOTE: We put the StyleSheetResourceClient in a member instead of inheriting from it
     // to avoid adding a vptr to StyleRuleImport.
-    class ImportedStyleSheetClient final : public StyleSheetResourceClient {
-        DISALLOW_NEW();
+    class ImportedStyleSheetClient final : public GarbageCollectedFinalized<ImportedStyleSheetClient>, public StyleSheetResourceClient {
     public:
         ImportedStyleSheetClient(StyleRuleImport* ownerRule) : m_ownerRule(ownerRule) { }
         ~ImportedStyleSheetClient() override { }
@@ -78,7 +77,6 @@ private:
     };
 
     void setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CSSStyleSheetResource*);
-    friend class ImportedStyleSheetClient;
 
     StyleRuleImport(const String& href, MediaQuerySet*);
 
@@ -86,7 +84,7 @@ private:
 
     Member<StyleSheetContents> m_parentStyleSheet;
 
-    ImportedStyleSheetClient m_styleSheetClient;
+    Member<ImportedStyleSheetClient> m_styleSheetClient;
     String m_strHref;
     Member<MediaQuerySet> m_mediaQueries;
     Member<StyleSheetContents> m_styleSheet;