Enable overview mode by default.

Enable overview mode by default.

BUG=284891
TEST=Alt-tab and F5 button will enter overview mode without a flag.

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=221297

[flackr, 2013-09-04 00:49:11]

Enable overview mode by default. If not ready by the end of the milestone we can
switch this back but this will give the feature some exposure and it should be
stable enough now.

https://codereview.chromium.org/23534041/diff/1/chrome/app/generated_resource...
File chrome/app/generated_resources.grd (left):

https://codereview.chromium.org/23534041/diff/1/chrome/app/generated_resource...
chrome/app/generated_resources.grd:5798: Enable overview mode, activated by
pushing the switch window button.
If it's okay, I've purposely left the old strings in here in case we need to
disable overview mode post string freeze.

[sky, 2013-09-04 14:27:03]

LGTM

[commit-bot: I haz the power, 2013-09-04 16:34:49]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/flackr@chromium.org/23534041/1

[commit-bot: I haz the power, 2013-09-04 17:54:26]

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

[commit-bot: I haz the power, 2013-09-04 20:46:57]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/flackr@chromium.org/23534041/22001

[commit-bot: I haz the power, 2013-09-04 21:17:30]

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

[commit-bot: I haz the power, 2013-09-04 21:20:07]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/flackr@chromium.org/23534041/22001

[commit-bot: I haz the power, 2013-09-04 23:35:18]

Change committed as 221297