[Mac] Remove unused property on GradientButtonCell

[Mac] Remove unused property on GradientButtonCell

BUG=

Review-Url: https://codereview.chromium.org/2860113002
Cr-Commit-Position: refs/heads/master@{#469389}
Committed: https://chromium.googlesource.com/chromium/src/+/5b970b537e755c4421b9a412dfe20df0a9c6daad

[lgrey, 2017-05-04 15:40:25]

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

[commit-bot: I haz the power, 2017-05-04 15:40:39]

Dry run: 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, 2017-05-04 16:23:19]

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

[commit-bot: I haz the power, 2017-05-04 16:23:19]

Dry run: This issue passed the CQ dry run.

[lgrey, 2017-05-04 17:03:23]

lgrey@chromium.org changed reviewers:
+ sdy@chromium.org

[lgrey, 2017-05-04 17:03:23]

PTAL :)

[Sidney San Martín, 2017-05-04 17:06:09]

lgtm

[lgrey, 2017-05-04 17:40:49]

lgrey@chromium.org changed reviewers:
+ ellyjones@chromium.org

[lgrey, 2017-05-04 17:40:49]

Thanks! 

+ellyjones@ for OWNERS

[Elly Fong-Jones, 2017-05-04 18:00:13]

lgtm

[lgrey, 2017-05-04 18:19:32]

The CQ bit was checked by lgrey@chromium.org

[commit-bot: I haz the power, 2017-05-04 18:19:56]

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, 2017-05-04 18:26:26]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493921972583670, "parent_rev":
"77bf83460738f6b1465d016ccfc26e930babfc00", "commit_rev":
"5b970b537e755c4421b9a412dfe20df0a9c6daad"}

[commit-bot: I haz the power, 2017-05-04 18:26:38]

Description was changed from

==========
[Mac] Remove unused property on GradientButtonCell

BUG=
==========

to

==========
[Mac] Remove unused property on GradientButtonCell

BUG=

Review-Url: https://codereview.chromium.org/2860113002
Cr-Commit-Position: refs/heads/master@{#469389}
Committed:
https://chromium.googlesource.com/chromium/src/+/5b970b537e755c4421b9a412dfe2...
==========

[commit-bot: I haz the power, 2017-05-04 18:26:39]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/5b970b537e755c4421b9a412dfe2...