Enable CSS hex alpha and scrollTopLeftInterop based on P targetting

Bug: 618472,790008
Change-Id: I663d380d14c927890a0863f4cb3158c2db1be408
Reviewed-on: https://chromium-review.googlesource.com/801017
Reviewed-by: Richard Coles <torne@chromium.org>
Commit-Queue: Tobias Sargeant <tobiasjs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521360}
2 files changed