[Mac] Fix bookmark bar no item container autoresizing mask

[Mac] Fix bookmark bar no item container autoresizing mask

More fallout from XIB removal :/

BUG=702287
Review-Url: https://codereview.chromium.org/2789613002
Cr-Commit-Position: refs/heads/master@{#461120}
Committed: https://chromium.googlesource.com/chromium/src/+/e46fe03681067bf67b40be80affabd6103880133

[lgrey, 2017-03-30 16:47:13]

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

[lgrey, 2017-03-30 16:47:13]

PTAL :)

[Elly Fong-Jones, 2017-03-31 14:15:30]

lgtm

[lgrey, 2017-03-31 14:24:26]

The CQ bit was checked by lgrey@chromium.org

[commit-bot: I haz the power, 2017-03-31 14:24:51]

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, 2017-03-31 14:46:25]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490970266214320, "parent_rev":
"25b49b2809f59ba95b9abc95ac0a0adaf4c97722", "commit_rev":
"e46fe03681067bf67b40be80affabd6103880133"}

[commit-bot: I haz the power, 2017-03-31 14:47:15]

Description was changed from

==========
[Mac] Fix bookmark bar no item container autoresizing mask

More fallout from XIB removal :/

BUG=702287
==========

to

==========
[Mac] Fix bookmark bar no item container autoresizing mask

More fallout from XIB removal :/

BUG=702287

Review-Url: https://codereview.chromium.org/2789613002
Cr-Commit-Position: refs/heads/master@{#461120}
Committed:
https://chromium.googlesource.com/chromium/src/+/e46fe03681067bf67b40be80affa...
==========

[commit-bot: I haz the power, 2017-03-31 14:47:17]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/e46fe03681067bf67b40be80affa...