[ash-md] Makes sure that minimized windows can be activated in overview

[ash-md] Makes sure that minimized windows can be activated in overview

When windows are minimized before entering overview mode, they are
replaced with a widget that has mirrored layers. Opacity of the original
window needs to be then set to 1 in order to make it visible
(in WindowMirrorView::InitLayerOwner()).
Upon exiting overview the original window's opacity is restored.
This logic breaks if a window is selected - the opacity need not be
restored (to zero).
Make it so that the opacity is set to 1 upon exit if a window is
selected.

BUG=677177
Review-Url: https://codereview.chromium.org/2637403013
Cr-Commit-Position: refs/heads/master@{#445524}
Committed: https://chromium.googlesource.com/chromium/src/+/8f64e9220762c7c7d5237cb4b4222898c5b0f4dc

[varkha, 2017-01-21 01:47:30]

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

[commit-bot: I haz the power, 2017-01-21 01:47:54]

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

[varkha, 2017-01-21 02:05:15]

varkha@chromium.org changed reviewers:
+ oshima@chromium.org

[varkha, 2017-01-21 02:05:15]

oshima@, can you please take a look? I think this got broken when mirrored
layers were implemented to show minimized windows during overview.

[commit-bot: I haz the power, 2017-01-21 02:22:32]

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

[commit-bot: I haz the power, 2017-01-21 02:22:33]

Dry run: This issue passed the CQ dry run.

[oshima, 2017-01-23 21:52:29]

lgtm

thank you for the fix.

[varkha, 2017-01-23 21:55:55]

The CQ bit was checked by varkha@chromium.org

[commit-bot: I haz the power, 2017-01-23 21:56:57]

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, 2017-01-23 22:47:44]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1485208555965620,
"parent_rev": "4d9f1c2e1cf7a167d2e0737692b18e5e68cbe71b", "commit_rev":
"8f64e9220762c7c7d5237cb4b4222898c5b0f4dc"}

[commit-bot: I haz the power, 2017-01-23 22:48:18]

Description was changed from

==========
[ash-md] Makes sure that minimized windows can be activated in overview

When windows are minimized before entering overview mode, they are
replaced with a widget that has mirrored layers. Opacity of the original
window needs to be then set to 1 in order to make it visible
(in WindowMirrorView::InitLayerOwner()).
Upon exiting overview the original window's opacity is restored.
This logic breaks if a window is selected - the opacity need not be
restored (to zero).
Make it so that the opacity is set to 1 upon exit if a window is
selected.

BUG=677177
==========

to

==========
[ash-md] Makes sure that minimized windows can be activated in overview

When windows are minimized before entering overview mode, they are
replaced with a widget that has mirrored layers. Opacity of the original
window needs to be then set to 1 in order to make it visible
(in WindowMirrorView::InitLayerOwner()).
Upon exiting overview the original window's opacity is restored.
This logic breaks if a window is selected - the opacity need not be
restored (to zero).
Make it so that the opacity is set to 1 upon exit if a window is
selected.

BUG=677177

Review-Url: https://codereview.chromium.org/2637403013
Cr-Commit-Position: refs/heads/master@{#445524}
Committed:
https://chromium.googlesource.com/chromium/src/+/8f64e9220762c7c7d5237cb4b422...
==========

[commit-bot: I haz the power, 2017-01-23 22:48:19]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/8f64e9220762c7c7d5237cb4b422...