[Mac][Material Design] Fix MD bookmarks button focus ring regression.

[Mac][Material Design] Fix MD bookmarks button focus ring regression.

After the Material Design changes to the bookmarks bar the focus rings
no longer align with the button images.

R=avi@chromium.org
BUG=613124
Review-Url: https://codereview.chromium.org/2030233003
Cr-Commit-Position: refs/heads/master@{#397598}
(cherry picked from commit b8e8a8f7a7fc3f66e0bc149602d8abac251b0304)

Committed: https://chromium.googlesource.com/chromium/src/+/8d9ad2a378673abce3aacb2f3f7c5ff6068ea118

[shrike, 2016-06-09 20:17:35]

Description was changed from

==========
[Mac][Material Design] Fix MD bookmarks button focus ring regression.

After the Material Design changes to the bookmarks bar the focus rings
no longer align with the button images.

R=avi@chromium.org
BUG=613124

Review-Url: https://codereview.chromium.org/2030233003
Cr-Commit-Position: refs/heads/master@{#397598}
(cherry picked from commit b8e8a8f7a7fc3f66e0bc149602d8abac251b0304)
==========

to

==========
[Mac][Material Design] Fix MD bookmarks button focus ring regression.

After the Material Design changes to the bookmarks bar the focus rings
no longer align with the button images.

R=avi@chromium.org
BUG=613124

Review-Url: https://codereview.chromium.org/2030233003
Cr-Commit-Position: refs/heads/master@{#397598}
(cherry picked from commit b8e8a8f7a7fc3f66e0bc149602d8abac251b0304)

Committed:
https://chromium.googlesource.com/chromium/src/+/8d9ad2a378673abce3aacb2f3f7c...
==========

[shrike, 2016-06-09 20:17:37]

Committed patchset #1 (id:1) manually as
8d9ad2a378673abce3aacb2f3f7c5ff6068ea118.

[Avi (use Gerrit), 2016-06-09 20:19:10]

lgtm