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The AppCompat bug that made this workaround necessary (see original bug:
https://crbug.com/474695) was fixed >4 years. Cleaning up now that it's
no longer applicable.

Tested UI on KitKat, Lollipop and Pie.

Change-Id: I6fb6b73a2c96d8d4fab0ef28710503011e86e77a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1747030Reviewed-by: Finnur Thorarinsson <finnur@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Natalie Chouinard <chouinard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#686135}