Enable ImplicitRootScroller

Bug: 903260
Change-Id: I9e9536385fd25b6fff08a6cc0ac6770b86410269
Reviewed-on: https://chromium-review.googlesource.com/c/1407495
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Commit-Queue: David Bokan <bokan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622178}
1 file changed