Changes ScreenMusDelegate::GetWindowAtScreenPoint to return aura::Window

Changes ScreenMusDelegate::GetWindowAtScreenPoint to return aura::Window

This way I can use it with both mus and aura-mus.

BUG=659155
TEST=none
R=erg@chromium.org

Committed: https://crrev.com/4cfb35a9796c4f49b2d608723242809081240fe6
Cr-Commit-Position: refs/heads/master@{#428824}

[Elliot Glaysher, 2016-10-31 19:04:28]

lgtm

[sky, 2016-10-31 20:05:27]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2016-10-31 20:06:18]

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, 2016-10-31 21:36:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-31 21:38:24]

Description was changed from

==========
Changes ScreenMusDelegate::GetWindowAtScreenPoint to return aura::Window

This way I can use it with both mus and aura-mus.

BUG=659155
TEST=none
R=erg@chromium.org
==========

to

==========
Changes ScreenMusDelegate::GetWindowAtScreenPoint to return aura::Window

This way I can use it with both mus and aura-mus.

BUG=659155
TEST=none
R=erg@chromium.org

Committed: https://crrev.com/4cfb35a9796c4f49b2d608723242809081240fe6
Cr-Commit-Position: refs/heads/master@{#428824}
==========

[commit-bot: I haz the power, 2016-10-31 21:38:25]

Patchset 1 (id:??) landed as
https://crrev.com/4cfb35a9796c4f49b2d608723242809081240fe6
Cr-Commit-Position: refs/heads/master@{#428824}