Autoplay: enable unified policy by default on trunk.

Bug: 779087, 746554
Change-Id: I22fea53534db6404da794c04320ef6b889dc5ac6
Reviewed-on: https://chromium-review.googlesource.com/817739
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524987}
9 files changed