commit 59eeb0282913e575a4409c257ce13f6de8e03d69
author eseckler <eseckler@chromium.org> Tue Jul 05 10:45:17 2016
committer Commit bot <commit-bot@chromium.org> Tue Jul 05 10:47:30 2016
tree 3946ccc8198806df791e48a031bfbe618c42f203
parent 8877204101e839b1e2b0c8192daea066af7bd2f0

Respect main thread scrolling reasons for fallback to root layer scrolling.

For this purpose, ScrollingCoordinator now also commits the main thread scrolling reasons to the visual viewport scroll layer. We can thus simply check for main thread scrolling reasons on the final layer selected for scrolling in LayerTreeHostImpl::FindScrollLayerForDeviceViewportPoint.

BUG=625100
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review-Url: https://codereview.chromium.org/2118773002
Cr-Commit-Position: refs/heads/master@{#403765}