Update CSSOM SmoothScroll Web Platform Test

third_party/WebKit/Source/core/dom/Element.idl

Index: third_party/WebKit/Source/core/dom/Element.idl
diff --git a/third_party/WebKit/Source/core/dom/Element.idl b/third_party/WebKit/Source/core/dom/Element.idl
index f642b455026e80b37cbe48f0996bc713172f60e2..09b59264fb97d535f6063e021657676d2f9c6dcb 100644
--- a/third_party/WebKit/Source/core/dom/Element.idl
+++ b/third_party/WebKit/Source/core/dom/Element.idl
@@ -95,7 +95,8 @@ interface Element : Node {
     ClientRectList getClientRects();
     ClientRect getBoundingClientRect();
 
-    void scrollIntoView(optional (ScrollIntoViewOptions or boolean)? arg);
+    void scrollIntoView();
+    void scrollIntoView((ScrollIntoViewOptions or boolean)? arg);
     [RuntimeEnabled=CSSOMSmoothScroll, ImplementedAs=scrollTo] void scroll(optional ScrollToOptions options);
     [RuntimeEnabled=CSSOMSmoothScroll, ImplementedAs=scrollTo] void scroll(unrestricted double x, unrestricted double y);
     [RuntimeEnabled=CSSOMSmoothScroll] void scrollTo(optional ScrollToOptions options);