GitLab

This CL adds VideoFrameValidators that check SSIM and PSNR,
respectively, to StreamValidator. It eenables
video_encode_accelerator_tests to check the quality of encoded
images produced by VideoEncodeAccelerator.

Bug: 1045825
Test: video_encode_accelerator_tests on eve
Change-Id: I5bca3b7f74e664488c38ab749d6d491883d7f356
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2190468Reviewed-by: David Staessens <dstaessens@chromium.org>
Commit-Queue: Hirokazu Honda <hiroh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#773992}