Reveals --ash-enable-fullscreen-app-list flag to chrome://flags.

Reveals --ash-enable-fullscreen-app-list flag to chrome://flags.

BUG=434113
R=oshima@chromium.org
TBR=jwd@chromium.org
TEST=manually

Committed: https://crrev.com/ecd95a64d46e97a028c57eeb1e67c48c267d2b87
Cr-Commit-Position: refs/heads/master@{#333156}

[oshima, 2015-06-05 18:03:25]

lgtm

[Jun Mukai, 2015-06-05 18:04:51]

The CQ bit was checked by mukai@chromium.org

[commit-bot: I haz the power, 2015-06-05 18:06:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1146303008/1

[commit-bot: I haz the power, 2015-06-05 19:12:17]

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

[commit-bot: I haz the power, 2015-06-05 19:12:18]

Try jobs failed on following builders:
  linux_chromium_chromeos_ozone_rel_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[Jun Mukai, 2015-06-05 21:23:52]

mukai@chromium.org changed reviewers:
+ jwd@chromium.org

[Jun Mukai, 2015-06-05 21:24:26]

TBR=jwd for adding an entry of histograms.xml for the about:flags entry.

[Jun Mukai, 2015-06-05 21:24:30]

The CQ bit was checked by mukai@chromium.org

[Jun Mukai, 2015-06-05 21:24:31]

The patchset sent to the CQ was uploaded after l-g-t-m from oshima@chromium.org
Link to the patchset: https://codereview.chromium.org/1146303008/#ps20001
(title: "histogram")

[commit-bot: I haz the power, 2015-06-05 21:25:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1146303008/20001

[commit-bot: I haz the power, 2015-06-05 22:37:16]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-06-05 22:38:14]

Patchset 2 (id:??) landed as
https://crrev.com/ecd95a64d46e97a028c57eeb1e67c48c267d2b87
Cr-Commit-Position: refs/heads/master@{#333156}