Remove HTMLTextAreaElement::rendererWillBeDestroyed()

Remove HTMLTextAreaElement::rendererWillBeDestroyed()

This code was added 6 years ago in https://trac.webkit.org/changeset/13051
and the test that was added with it fast/forms/textarea-setvalue-submit.html
still passes without the code now. It doesn't make any sense that form
controls would need to do this update in the destructor of the renderer,
especially not only <textarea> since none of the other controls do this.

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=164587

[abarth-chromium, 2014-01-04 22:58:54]

lgtm

[commit-bot: I haz the power, 2014-01-04 23:03:59]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/esprehn@chromium.org/123693004/1

[commit-bot: I haz the power, 2014-01-04 23:04:19]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/esprehn@chromium.org/123693004/1

[commit-bot: I haz the power, 2014-01-05 02:05:15]

Retried try job too often on win_blink_rel for step(s) webkit_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_blink_...

[commit-bot: I haz the power, 2014-01-07 13:55:22]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/esprehn@chromium.org/123693004/1

[commit-bot: I haz the power, 2014-01-07 15:07:15]

Change committed as 164587