Convert TrayBubbleWrapper to wm common types

Convert TrayBubbleWrapper to wm common types

This can't move to //ash/common yet because of dependencies on
TrayBackgroundView.

BUG=619636
TEST=manual, see crbug.com/177075

Committed: https://crrev.com/143c7930eae1a0984232e8e306798e20fda4e3c4
Cr-Commit-Position: refs/heads/master@{#401314}

[James Cook, 2016-06-21 22:56:25]

jamescook@chromium.org changed reviewers:
+ msw@chromium.org

[James Cook, 2016-06-21 22:56:26]

msw, please take a look. There are some intertwined dependencies between these
core ash/system/tray classes. I'm converting them in place so we can move them
in bulk later.

[msw, 2016-06-21 23:07:46]

nice; lgtm

[James Cook, 2016-06-21 23:20:42]

The CQ bit was checked by jamescook@chromium.org

[commit-bot: I haz the power, 2016-06-21 23:21:45]

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

[commit-bot: I haz the power, 2016-06-21 23:21:46]

This CL has an open dependency (Issue 2086143002 Patch 40001). Please resolve
the dependency and try again.
If you are sure that there is no real dependency, please use one of the options
listed in https://goo.gl/9Es4OR to land the CL.

[James Cook, 2016-06-22 15:53:55]

The CQ bit was checked by jamescook@chromium.org

[James Cook, 2016-06-22 15:53:55]

The patchset sent to the CQ was uploaded after l-g-t-m from msw@chromium.org
Link to the patchset: https://codereview.chromium.org/2085133002/#ps20001
(title: "rebase")

[commit-bot: I haz the power, 2016-06-22 15:54:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2085133002/20001

[commit-bot: I haz the power, 2016-06-22 17:05:35]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-06-22 17:08:15]

Description was changed from

==========
Convert TrayBubbleWrapper to wm common types

This can't move to //ash/common yet because of dependencies on
TrayBackgroundView.

BUG=619636
TEST=manual, see crbug.com/177075
==========

to

==========
Convert TrayBubbleWrapper to wm common types

This can't move to //ash/common yet because of dependencies on
TrayBackgroundView.

BUG=619636
TEST=manual, see crbug.com/177075

Committed: https://crrev.com/143c7930eae1a0984232e8e306798e20fda4e3c4
Cr-Commit-Position: refs/heads/master@{#401314}
==========

[commit-bot: I haz the power, 2016-06-22 17:08:16]

Patchset 2 (id:??) landed as
https://crrev.com/143c7930eae1a0984232e8e306798e20fda4e3c4
Cr-Commit-Position: refs/heads/master@{#401314}