Let ShadowRoot.getElementById() fall back to DocumentFragment

Let ShadowRoot.getElementById() fall back to DocumentFragment

ShadowRoot.getElementById() was added in 2012:
http://trac.webkit.org/changeset/106434

DocumentFragment.getElementById() was added in 2014:
https://codereview.chromium.org/251633002

The ShadowRoot override no longer serves any purpose. The argument
becomes non-optional with this change, which is Web-observable.

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=187009

[philipj_slow, 2014-12-11 20:02:32]

update tests

[philipj_slow, 2014-12-11 20:04:02]

philipj@opera.com changed reviewers:
+ dglazkov@chromium.org

[philipj_slow, 2014-12-11 20:04:03]

Dimitri, you get to review this since you reviewed its addition in 2012 :)

[philipj_slow, 2014-12-12 08:54:20]

philipj@opera.com changed reviewers:
+ hayato@chromium.org

[philipj_slow, 2014-12-12 08:54:21]

Hayato, can you PTAL?

[hayato, 2014-12-12 08:57:55]

LGTM

It seemed I forgot to remove getElementById from ShadowRoot when I removed it
from the spec:
https://github.com/w3c/webcomponents/commit/3d5f147812edaf74cc4f07d294836cafd...

[philipj_slow, 2014-12-12 09:09:52]

The CQ bit was checked by philipj@opera.com

[commit-bot: I haz the power, 2014-12-12 09:10:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/799543002/20001

[commit-bot: I haz the power, 2014-12-12 10:07:07]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=187009