GitLab

Leave all protobuf messages/enums/fields in-place in the protobuf
definition, but deprecate them all. Then, remove all C++ code related
to DRM. (This is a feature that never launched.)

Bug: 1102847
Change-Id: Iae7ce89e35d22e50c1360d2f4618981f8a79e682
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2285875
Commit-Queue: Yuri Wiitala <miu@chromium.org>
Auto-Submit: Yuri Wiitala <miu@chromium.org>
Reviewed-by: mark a. foltz <mfoltz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#788367}