Moves WmWindow::GetInternalWidget() into a standalone function

Moves WmWindow::GetInternalWidget() into a standalone function

BUG=687656
TEST=covered by tests
R=jamescook@chromium.org

Review-Url: https://codereview.chromium.org/2798333005
Cr-Commit-Position: refs/heads/master@{#463084}
Committed: https://chromium.googlesource.com/chromium/src/+/10784779e17f9d143d5f57c7ff902ee7efc0cc81

[sky, 2017-04-07 23:27:26]

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

[commit-bot: I haz the power, 2017-04-07 23:28:06]

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

[James Cook, 2017-04-07 23:30:57]

LGTM

[sky, 2017-04-07 23:31:19]

The CQ bit was unchecked by sky@chromium.org

[sky, 2017-04-07 23:31:24]

The CQ bit was checked by sky@chromium.org

[commit-bot: I haz the power, 2017-04-07 23:31:39]

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, 2017-04-08 00:55:26]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491607884206780, "parent_rev":
"ae4affcb8a0c75b0052b0e0628f762d83020a846", "commit_rev":
"10784779e17f9d143d5f57c7ff902ee7efc0cc81"}

[commit-bot: I haz the power, 2017-04-08 00:56:35]

Description was changed from

==========
Moves WmWindow::GetInternalWidget() into a standalone function

BUG=687656
TEST=covered by tests
R=jamescook@chromium.org
==========

to

==========
Moves WmWindow::GetInternalWidget() into a standalone function

BUG=687656
TEST=covered by tests
R=jamescook@chromium.org

Review-Url: https://codereview.chromium.org/2798333005
Cr-Commit-Position: refs/heads/master@{#463084}
Committed:
https://chromium.googlesource.com/chromium/src/+/10784779e17f9d143d5f57c7ff90...
==========

[commit-bot: I haz the power, 2017-04-08 00:56:36]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/10784779e17f9d143d5f57c7ff90...