mash: Fix crash when closing system tray menu

mash: Fix crash when closing system tray menu

Look up the container for windows based on shell ID, not window type.

BUG=641370
TEST=added to ash_unittests and mash_unittests
R=sky@chromium.org

Committed: https://crrev.com/0de3abb5ea1173f52e3ad20f7760b2cfe260685d
Cr-Commit-Position: refs/heads/master@{#414913}

[James Cook, 2016-08-26 17:49:04]

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

[James Cook, 2016-08-26 17:49:13]

sky, please take a look.

https://codereview.chromium.org/2287583002/diff/1/ash/mus/wm/container_finder...
File ash/mus/wm/container_finder_unittest.cc (right):

https://codereview.chromium.org/2287583002/diff/1/ash/mus/wm/container_finder...
ash/mus/wm/container_finder_unittest.cc:15: using ContainerFinderTest =
mus::WmTestBase;
I did the same thing as MruWindowTrackerTest and created versions for aura and
mus, since the tests need different base classes.

[commit-bot: I haz the power, 2016-08-26 17:49:38]

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

[sky, 2016-08-26 18:03:49]

LGTM

[James Cook, 2016-08-26 18:12:08]

The CQ bit was unchecked by jamescook@chromium.org

[James Cook, 2016-08-26 18:12:13]

The CQ bit was checked by jamescook@chromium.org

[commit-bot: I haz the power, 2016-08-26 18:12:21]

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, 2016-08-26 20:07:16]

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

[commit-bot: I haz the power, 2016-08-26 20:07:17]

Try jobs failed on following builders:
  win_chromium_rel_ng on master.tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[James Cook, 2016-08-26 23:24:47]

The CQ bit was checked by jamescook@chromium.org

[commit-bot: I haz the power, 2016-08-26 23:25:19]

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, 2016-08-27 10:58:57]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-27 11:01:56]

Description was changed from

==========
mash: Fix crash when closing system tray menu

Look up the container for windows based on shell ID, not window type.

BUG=641370
TEST=added to ash_unittests and mash_unittests
R=sky@chromium.org
==========

to

==========
mash: Fix crash when closing system tray menu

Look up the container for windows based on shell ID, not window type.

BUG=641370
TEST=added to ash_unittests and mash_unittests
R=sky@chromium.org

Committed: https://crrev.com/0de3abb5ea1173f52e3ad20f7760b2cfe260685d
Cr-Commit-Position: refs/heads/master@{#414913}
==========

[commit-bot: I haz the power, 2016-08-27 11:01:58]

Patchset 1 (id:??) landed as
https://crrev.com/0de3abb5ea1173f52e3ad20f7760b2cfe260685d
Cr-Commit-Position: refs/heads/master@{#414913}