Move TestDisplayController into own capability class.

Move TestDisplayController into own capability class.

TestDisplayController isn't directly related to the window_manager
class and shouldn't be part of it.

BUG=657107
Review-Url: https://codereview.chromium.org/2652973003
Cr-Commit-Position: refs/heads/master@{#445797}
Committed: https://chromium.googlesource.com/chromium/src/+/09b64d2271dec56ef2c739809abc499263926b69

[kylechar, 2017-01-24 15:54:47]

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

[sky, 2017-01-24 18:51:34]

LGTM

[kylechar, 2017-01-24 18:51:53]

The CQ bit was checked by kylechar@chromium.org

[commit-bot: I haz the power, 2017-01-24 18:52:34]

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, 2017-01-24 20:42:41]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485283913181210, "parent_rev":
"c9ddc80f9fd8bd98e17ba389099dc94fdd167d87", "commit_rev":
"09b64d2271dec56ef2c739809abc499263926b69"}

[commit-bot: I haz the power, 2017-01-24 20:43:21]

Description was changed from

==========
Move TestDisplayController into own capability class.

TestDisplayController isn't directly related to the window_manager
class and shouldn't be part of it.

BUG=657107
==========

to

==========
Move TestDisplayController into own capability class.

TestDisplayController isn't directly related to the window_manager
class and shouldn't be part of it.

BUG=657107

Review-Url: https://codereview.chromium.org/2652973003
Cr-Commit-Position: refs/heads/master@{#445797}
Committed:
https://chromium.googlesource.com/chromium/src/+/09b64d2271dec56ef2c739809abc...
==========

[commit-bot: I haz the power, 2017-01-24 20:43:25]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/09b64d2271dec56ef2c739809abc...