Revert 149589 "Set a bit on Custom Elements on creation to simplify wrapping"

Revert 149589 "Set a bit on Custom Elements on creation to simplify wrapping"

> Set a bit on Custom Elements on creation to simplify wrapping
> For now, this makes wrapping faster because the wrapper factory can
> check this bit instead of examining the tag name and "is" attribute.
>
> This bit will soon be required for correctness: Currently, because
> elements are only activated at creation time, there is no window in
> which the "is" attribute can be changed by script before the element
> is upgraded. Soon we will do post-hoc upgrade of custom elements
> created before their definitions are available. This bit will be
> necessary for opting elements into that processing.
>
> BUG=233775
>
> Review URL: https://chromiumcodereview.appspot.com/14834002

fast/dom/wrapper-classes.html crashes on debug builds

NOTRY=true
TBR=dominicc@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=149593

[commit-bot: I haz the power, 2013-05-02 13:11:18]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/dstockwell@chromium.org/14688008/1

[commit-bot: I haz the power, 2013-05-02 13:11:32]

Change committed as 149593

[dominicc (has gone to gerrit), 2013-05-02 15:03:29]

Interesting. Thanks for rolling out; I will investigate.