Move the CSSOM View offset* attributes to HTMLElement

Source/core/dom/Element.idl

Index: Source/core/dom/Element.idl
diff --git a/Source/core/dom/Element.idl b/Source/core/dom/Element.idl
index f67d87a24986a01701d11a8d0882461a03e69520..9501152890ff2de55708e7141b3f35cf808b29d7 100644
--- a/Source/core/dom/Element.idl
+++ b/Source/core/dom/Element.idl
@@ -93,13 +93,6 @@ interface Element : Node {
     readonly attribute long clientLeft;
     readonly attribute long clientWidth;
     readonly attribute long clientHeight;
-    // http://dev.w3.org/csswg/cssom-view/#extensions-to-the-htmlelement-interface
-    // FIXME: offset* should be on HTMLElement.
-    [ImplementedAs=offsetParentForBindings, PerWorldBindings] readonly attribute Element? offsetParent;
-    readonly attribute long offsetTop;
-    readonly attribute long offsetLeft;
-    readonly attribute long offsetWidth;
-    readonly attribute long offsetHeight;
 
     // CSS Object Model (CSSOM)
     // http://dev.w3.org/csswg/cssom/#the-elementcssinlinestyle-interface