GitLab

Added toolbar shadow for the video tutorial list. Also modified the
change language button text to show a constant string.

Bug: 1168267
Change-Id: I682e527a37a677da0ca40f809c7e19bfddbe8887
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2638414
Commit-Queue: Shakti Sahu <shaktisahu@chromium.org>
Reviewed-by: Min Qin <qinmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845292}