Oilpan: Ensure that classes with virtual trace methods always have vtables for their left-most base…

Source/core/svg/SVGFontFaceUriElement.h

Index: Source/core/svg/SVGFontFaceUriElement.h
diff --git a/Source/core/svg/SVGFontFaceUriElement.h b/Source/core/svg/SVGFontFaceUriElement.h
index f1d7a37cb6897459fd2cc3e0ebbc1c7e4d725bd4..ebb48c08040c48706e487064c8285daddb77037d 100644
--- a/Source/core/svg/SVGFontFaceUriElement.h
+++ b/Source/core/svg/SVGFontFaceUriElement.h
@@ -38,6 +38,12 @@ public:
 
     PassRefPtrWillBeRawPtr<CSSFontFaceSrcValue> srcValue() const;
 
+    virtual void trace(Visitor* visitor) OVERRIDE
+    {
+        SVGElement::trace(visitor);
+        FontResourceClient::trace(visitor);
+    }
+
 private:
     explicit SVGFontFaceUriElement(Document&);