GitLab

This reverts commit 8096ec8c.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 602535 as the
culprit for failures in the build cycles as shown on:
https://findit-for-me.appspot.com/waterfall/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyRAsSDVdmU3VzcGVjdGVkQ0wiMWNocm9taXVtLzgwOTZlYzhjYjkyZDI1MjRhYzM0ZTRhNTQ2ZGQ0YWEzZWRmZmNmNjgM

Sample Failed Build: https://ci.chromium.org/buildbot/chromium.linux/Cast%20Audio%20Linux/23855

Sample Failed Step: ui_base_unittests

Original change's description:
> Remove MaterialDesignController::GetMode() and old MD mode enum values.
> 
> De-parameterizes one test that doesn't care about the MD mode.
> 
> Bug: none
> Change-Id: I8a89eda9e66a9fc59b2c61668d1fdebc4ee7879b
> Reviewed-on: https://chromium-review.googlesource.com/c/1297647
> Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
> Reviewed-by: Scott Violet <sky@chromium.org>
> Reviewed-by: Allen Bauer <kylixrd@chromium.org>
> Commit-Queue: Peter Kasting <pkasting@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#602535}

Change-Id: Ie2378fa9f3d81841fc418a7ec77c2bddb76fde9b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: none
Reviewed-on: https://chromium-review.googlesource.com/c/1298641
Cr-Commit-Position: refs/heads/master@{#602552}