[mus+ash] Removes WmWindow from ash/wm/screen_pinning_controller.h

[mus+ash] Removes WmWindow from ash/wm/screen_pinning_controller.h

BUG=722553
TEST=None (refactoring)

Review-Url: https://codereview.chromium.org/2904073002
Cr-Commit-Position: refs/heads/master@{#474806}
Committed: https://chromium.googlesource.com/chromium/src/+/19d7e6c565f69afe7d6e20e6def303033faa1be6

[varkha, 2017-05-25 19:43:15]

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

[varkha, 2017-05-25 19:43:43]

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

[varkha, 2017-05-25 19:43:43]

sky@, can you please take a look? Thanks!

[commit-bot: I haz the power, 2017-05-25 19:44:01]

Dry run: CQ is trying da patch.

Follow status at:
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[sky, 2017-05-25 19:57:33]

LGTM

[varkha, 2017-05-25 20:30:28]

The CQ bit was checked by varkha@chromium.org

[commit-bot: I haz the power, 2017-05-25 20:31:34]

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, 2017-05-25 21:15:39]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1495744228889560,
"parent_rev": "71cedf9cc39e53e0341dd3dc4b4d7139376dbd48", "commit_rev":
"19d7e6c565f69afe7d6e20e6def303033faa1be6"}

[commit-bot: I haz the power, 2017-05-25 21:15:53]

Description was changed from

==========
[mus+ash] Removes WmWindow from ash/wm/screen_pinning_controller.h

BUG=722553
TEST=None (refactoring)
==========

to

==========
[mus+ash] Removes WmWindow from ash/wm/screen_pinning_controller.h

BUG=722553
TEST=None (refactoring)

Review-Url: https://codereview.chromium.org/2904073002
Cr-Commit-Position: refs/heads/master@{#474806}
Committed:
https://chromium.googlesource.com/chromium/src/+/19d7e6c565f69afe7d6e20e6def3...
==========

[commit-bot: I haz the power, 2017-05-25 21:15:54]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/19d7e6c565f69afe7d6e20e6def3...