+ focus() / blur() should be on HTMLElement / SVGElement, not Element
+ https://bugs.webkit.org/show_bug.cgi?id=155216
+
+ Reviewed by Darin Adler.
+
+ focus() / blur() should be on HTMLElement / SVGElement, not Element:
+ - https://html.spec.whatwg.org/multipage/dom.html#htmlelement
+ - https://www.w3.org/TR/SVG2/types.html#InterfaceSVGElement
+
+ Chrome and Firefox match the specification.
+
+ Note that after this change, focus() / blur() is no longer exposed
+ on MathMLElement. This matches the MathML specification and is
+ consistent with Firefox and Chrome.
+
+ * dom/Element.idl:
+ * html/HTMLElement.idl:
+ * svg/SVGElement.idl:
+
+2016-03-09 Chris Dumez <cdumez@apple.com>
+