Enable style sharing for <option> and <optgroup>

Enable style sharing for <option> and <optgroup>

This was attempted long ago but then reverted because it broke some tests
related to text transforms and disabled states [1]. Those tests don't seem
to fail anymore though and I can't think of any reason why sharing style
should change the rendering of RenderMenuList.

Enabling this makes http://jsfiddle.net/p4saV/1/ 56% faster where you have
5000 <option>'s and all of bootstrap's CSS.

[1] https://bugs.webkit.org/show_bug.cgi?id=88405

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=170249

[eseidel, 2014-03-27 23:07:44]

lgtm

I'm confused why we still have all these manual exclusions.  I'm surprised that
these individual elements don't have a generic way to opt-out of style sharing.

[commit-bot: I haz the power, 2014-03-27 23:07:55]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/esprehn@chromium.org/215723002/1

[commit-bot: I haz the power, 2014-03-27 23:11:32]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-27 23:11:33]

Try jobs failed on following builders:
  tryserver.blink on blink_presubmit

[esprehn, 2014-03-27 23:19:32]

The CQ bit was checked by esprehn@chromium.org

[commit-bot: I haz the power, 2014-03-27 23:19:39]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/esprehn@chromium.org/215723002/1

[commit-bot: I haz the power, 2014-03-27 23:45:01]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-27 23:45:02]

Try jobs failed on following builders:
  tryserver.blink on mac_blink_rel

[esprehn, 2014-03-28 01:21:20]

The CQ bit was checked by esprehn@chromium.org

[commit-bot: I haz the power, 2014-03-28 01:21:31]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/esprehn@chromium.org/215723002/1

[commit-bot: I haz the power, 2014-03-28 02:30:21]

Change committed as 170249