views/mus: Chaneg how Widget activation works in mus.

views/mus: Chaneg how Widget activation works in mus.

Install an aura::client::FocusClient implementation on NativeWidgetMus's aura
window-tree which focuses the mus::Window when the aura::Window is focused.

This change allows running some tests in views/focus/focus_manager_unittest.cc
under mus.

BUG=577274
Committed: https://crrev.com/54c3afdc90bcdf7f12662e8dfcfd3ac3c4864332
Cr-Commit-Position: refs/heads/master@{#398610}

[sadrul, 2016-06-08 14:45:04]

sadrul@chromium.org changed reviewers:
+ sky@chromium.org

[sky, 2016-06-08 17:31:13]

LGTM

[sadrul, 2016-06-08 17:32:59]

The CQ bit was checked by sadrul@chromium.org

[commit-bot: I haz the power, 2016-06-08 17:33:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2049723002/1

[commit-bot: I haz the power, 2016-06-08 17:37:21]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-08 17:38:19]

Description was changed from

==========
views/mus: Chaneg how Widget activation works in mus.

Install an aura::client::FocusClient implementation on NativeWidgetMus's aura
window-tree which focuses the mus::Window when the aura::Window is focused.

This change allows running some tests in views/focus/focus_manager_unittest.cc
under mus.

BUG=577274
==========

to

==========
views/mus: Chaneg how Widget activation works in mus.

Install an aura::client::FocusClient implementation on NativeWidgetMus's aura
window-tree which focuses the mus::Window when the aura::Window is focused.

This change allows running some tests in views/focus/focus_manager_unittest.cc
under mus.

BUG=577274

Committed: https://crrev.com/54c3afdc90bcdf7f12662e8dfcfd3ac3c4864332
Cr-Commit-Position: refs/heads/master@{#398610}
==========

[commit-bot: I haz the power, 2016-06-08 17:38:20]

Patchset 1 (id:??) landed as
https://crrev.com/54c3afdc90bcdf7f12662e8dfcfd3ac3c4864332
Cr-Commit-Position: refs/heads/master@{#398610}