[Mac][Material Design] Add temporary spinner for Incognito mode.

[Mac][Material Design] Add temporary spinner for Incognito mode.

The tab spinner on the Mac will be replaced by a Material Design version
in a future cl. Until then, we need a white version of the current
spinner so that it's visible on Incognito tabs.

R=cpu@chromium.org
BUG=618778
Committed: https://crrev.com/58a27fbd45da0a20f536e0607b59c8f1658db0be
Cr-Commit-Position: refs/heads/master@{#402316}

[shrike, 2016-06-25 00:15:05]

PTAL

[cpu_(ooo_6.6-7.5), 2016-06-27 20:49:03]

lgtm

[shrike, 2016-06-27 20:50:34]

The CQ bit was checked by shrike@chromium.org

[commit-bot: I haz the power, 2016-06-27 20:51:37]

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, 2016-06-27 22:34:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-27 22:36:02]

Description was changed from

==========
[Mac][Material Design] Add temporary spinner for Incognito mode.

The tab spinner on the Mac will be replaced by a Material Design version
in a future cl. Until then, we need a white version of the current
spinner so that it's visible on Incognito tabs.

R=cpu@chromium.org
BUG=618778
==========

to

==========
[Mac][Material Design] Add temporary spinner for Incognito mode.

The tab spinner on the Mac will be replaced by a Material Design version
in a future cl. Until then, we need a white version of the current
spinner so that it's visible on Incognito tabs.

R=cpu@chromium.org
BUG=618778

Committed: https://crrev.com/58a27fbd45da0a20f536e0607b59c8f1658db0be
Cr-Commit-Position: refs/heads/master@{#402316}
==========

[commit-bot: I haz the power, 2016-06-27 22:36:03]

Patchset 1 (id:??) landed as
https://crrev.com/58a27fbd45da0a20f536e0607b59c8f1658db0be
Cr-Commit-Position: refs/heads/master@{#402316}