This is an umbrella bug that covers the work to finish the conversion from hand written to auto-generated JS bindings.
First set landed in r21577 generating HTMLTableElement, HTMLTableCaptionElement, HTMLTableCellElement, HTMLTableColElement, HTMLTableRowElement, and HTMLTableSectionElement.
Second patch landed in r21624 generating HTMLIFrameElement and HTMLFrameElement.
Third patch landed in r21633 generating HTMLMarqueeElement.
Forth patch landed in r 21714 generating HTMLFrameSetElement
Fifth patch landed in r21832 generating HTMLEmbedElement and HTMLObjectElement, and completing the generation of HTMLAppletElement.
Do we need to keep this bug open?
Not really, but I see no harm in keeping it open either.