Fixes visibility bugs in DesktopWindowTreeHostMus

Fixes visibility bugs in DesktopWindowTreeHostMus

Close() needs to hide right away.
And the delegate wasn't notified of show/hide.

BUG=674003
TEST=covered by test
R=erg@chromium.org

Committed: https://crrev.com/88dc5d7572db0090dbb1b14442da7d2c33efb18c
Cr-Commit-Position: refs/heads/master@{#438882}

[sky, 2016-12-15 17:41:50]

The CQ bit was checked by sky@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-12-15 17:42:10]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Elliot Glaysher, 2016-12-15 18:09:05]

lgtm

[sky, 2016-12-15 18:23:30]

The CQ bit was unchecked by sky@chromium.org

[sky, 2016-12-15 18:23:33]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2016-12-15 18:23:55]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-12-15 18:51:14]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1481826213263400, "parent_rev":
"d8cadf92a9bd8757f2e6ff65545a0810bb8da394", "commit_rev":
"0f96eb94a25ec43d60a4c9091b50f78ce9b3dcee"}

[commit-bot: I haz the power, 2016-12-15 18:51:41]

Description was changed from

==========
Fixes visibility bugs in DesktopWindowTreeHostMus

Close() needs to hide right away.
And the delegate wasn't notified of show/hide.

BUG=674003
TEST=covered by test
R=erg@chromium.org
==========

to

==========
Fixes visibility bugs in DesktopWindowTreeHostMus

Close() needs to hide right away.
And the delegate wasn't notified of show/hide.

BUG=674003
TEST=covered by test
R=erg@chromium.org

Review-Url: https://codereview.chromium.org/2582523003
==========

[commit-bot: I haz the power, 2016-12-15 18:51:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-15 18:53:32]

Description was changed from

==========
Fixes visibility bugs in DesktopWindowTreeHostMus

Close() needs to hide right away.
And the delegate wasn't notified of show/hide.

BUG=674003
TEST=covered by test
R=erg@chromium.org

Review-Url: https://codereview.chromium.org/2582523003
==========

to

==========
Fixes visibility bugs in DesktopWindowTreeHostMus

Close() needs to hide right away.
And the delegate wasn't notified of show/hide.

BUG=674003
TEST=covered by test
R=erg@chromium.org

Committed: https://crrev.com/88dc5d7572db0090dbb1b14442da7d2c33efb18c
Cr-Commit-Position: refs/heads/master@{#438882}
==========

[commit-bot: I haz the power, 2016-12-15 18:53:32]

Patchset 1 (id:??) landed as
https://crrev.com/88dc5d7572db0090dbb1b14442da7d2c33efb18c
Cr-Commit-Position: refs/heads/master@{#438882}