GitLab

This prevents us from having to put our layout interpolation code in
LayoutManagerBase where it really doesn't belong.

Bug: 898632
Change-Id: I837b14ff05eee9f5ea9b2659955d787bde23958e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1815665Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Robert Liao <robliao@chromium.org>
Commit-Queue: Dana Fried <dfried@chromium.org>
Cr-Commit-Position: refs/heads/master@{#698696}