[Mac][Material Design] Fix toolbar icon hover bg for custom themes.

[Mac][Material Design] Fix toolbar icon hover bg for custom themes.

The toolbar button was set to always show the light version of the
hover background. For light themes, this rendered the hover background
invisible.

R=avi@chromium.org
BUG=594678
Committed: https://crrev.com/94c1aa12416a70721b4bf4b0cb3b416282e5060e
Cr-Commit-Position: refs/heads/master@{#394797}

[shrike, 2016-05-18 23:39:58]

PTAL

[Avi (use Gerrit), 2016-05-19 03:38:32]

lgtm

[shrike, 2016-05-19 16:12:46]

The CQ bit was checked by shrike@chromium.org

[commit-bot: I haz the power, 2016-05-19 16:13:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1987053005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1987053005/1

[commit-bot: I haz the power, 2016-05-19 16:50:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-19 16:51:32]

Description was changed from

==========
[Mac][Material Design] Fix toolbar icon hover bg for custom themes.

The toolbar button was set to always show the light version of the
hover background. For light themes, this rendered the hover background
invisible.

R=avi@chromium.org
BUG=594678
==========

to

==========
[Mac][Material Design] Fix toolbar icon hover bg for custom themes.

The toolbar button was set to always show the light version of the
hover background. For light themes, this rendered the hover background
invisible.

R=avi@chromium.org
BUG=594678

Committed: https://crrev.com/94c1aa12416a70721b4bf4b0cb3b416282e5060e
Cr-Commit-Position: refs/heads/master@{#394797}
==========

[commit-bot: I haz the power, 2016-05-19 16:51:33]

Patchset 1 (id:??) landed as
https://crrev.com/94c1aa12416a70721b4bf4b0cb3b416282e5060e
Cr-Commit-Position: refs/heads/master@{#394797}