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This is an additional header file for using libva in protected content
mode that was supplied by Intel. This will not be merged into libva
directly as it pertains to closed source functionality in the iHD
driver. libva is able to pass through these details without knowing
about them.

BUG=b:153111783
TEST=None

Change-Id: I10759537cd653e9a541b30931c6474c014dbb256
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2523100Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Jeffrey Kardatzke <jkardatzke@google.com>
Cr-Commit-Position: refs/heads/master@{#825379}