GitLab

This adds encrypted content support to the VAAPI H265 accelerator.
This is not implemented in the driver yet, but this will facilitate
better testing by Intel if we implement it first and it's fairly
straightforward to do it.

BUG=b:153111783,chromium:1141237
TEST=Builds, clear HEVC content playback works

Change-Id: Ibe468777b663cbc301b6d2c14ab1d2bceeda8e6f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2555544
Commit-Queue: Jeffrey Kardatzke <jkardatzke@google.com>
Reviewed-by: Miguel Casas <mcasas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#831954}