Remove SVGTests related code from SVGGraphicsElement subclasses

Source/core/svg/SVGUseElement.h

Index: Source/core/svg/SVGUseElement.h
diff --git a/Source/core/svg/SVGUseElement.h b/Source/core/svg/SVGUseElement.h
index ed90a0e9bd122afe7efa92571c51202388f1290d..b659fac777720bee1bb1f9bc6798a6f67cf753b8 100644
--- a/Source/core/svg/SVGUseElement.h
+++ b/Source/core/svg/SVGUseElement.h
@@ -110,11 +110,6 @@ private:
     Document* referencedDocument() const;
     void setCachedDocument(CachedResourceHandle<CachedDocument>);
 
-    // SVGTests
-    virtual void synchronizeRequiredFeatures() { SVGTests::synchronizeRequiredFeatures(this); }
-    virtual void synchronizeRequiredExtensions() { SVGTests::synchronizeRequiredExtensions(this); }
-    virtual void synchronizeSystemLanguage() { SVGTests::synchronizeSystemLanguage(this); }
-
     // SVGExternalResourcesRequired
     virtual void setHaveFiredLoadEvent(bool haveFiredLoadEvent) { m_haveFiredLoadEvent = haveFiredLoadEvent; }
     virtual bool isParserInserted() const { return m_wasInsertedByParser; }