Allow remapping Search/Ctrl/Alt to Esc.

Allow remapping Search/Ctrl/Alt to Esc.

BUG=224357
TEST=new unit tests.
TEST=manually checked that remapped Search works as ESC.
TEST=keyboard help shows the correct label 'esc' when Search is remapped to ESC.
R=nona@chromium.org, sky@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=223573

[Yusuke Sato, 2013-09-11 14:07:41]

Please take a look.

[Seigo Nonaka, 2013-09-12 09:27:09]

lgtm

[Yusuke Sato, 2013-09-12 09:29:45]

On 2013/09/12 09:27:09, Seigo Nonaka wrote:
> lgtm

+sky

Scott, could you do an owners review?

[sky, 2013-09-12 18:00:05]

LGTM

[commit-bot: I haz the power, 2013-09-16 16:28:18]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/yusukes@chromium.org/23866008/1

[commit-bot: I haz the power, 2013-09-17 03:05:03]

Retried try job too often on win7_aura for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win7_aura&...

[commit-bot: I haz the power, 2013-09-17 03:14:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/yusukes@chromium.org/23866008/1

[commit-bot: I haz the power, 2013-09-17 08:00:32]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/yusukes@chromium.org/23866008/1

[Yusuke Sato, 2013-09-17 09:28:20]

Committed patchset #1 manually as r223573 (presubmit successful).