GitLab

Usages in internal repo have been fixed, so we should make the real
material design target private and only allow access to the public
alias.

Bug: 1110346
Change-Id: Id9bf2b705d51ef95eac6b2154c1d796369e4ec7f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2347957
Commit-Queue: Peter Wen <wnwen@chromium.org>
Reviewed-by: Peter Wen <wnwen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#797656}