GitLab

Flip the VaapiVP8Encoder flag to enable VA-API based HW VP8 encoder by
default.

BUG=794608
TEST=veatest, apprtc

Change-Id: If99f825788786dc4cc2be8c4f7a3908d04023368
Reviewed-on: https://chromium-review.googlesource.com/1080436Reviewed-by: Dan Sanders <sandersd@chromium.org>
Commit-Queue: Pawel Osciak <posciak@chromium.org>
Cr-Commit-Position: refs/heads/master@{#564004}