GitLab

The items eat the events aimed for the controller than shifts the grid
left and right, we need to change so window drags on begin on
long presses.

Test: manual, added tests
Bug: 991346
Change-Id: I387fa0a4acff17e4b9673f1d042cf8ae8d4b1eec
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1749710
Commit-Queue: Danton Vu <dantonvu@google.com>
Reviewed-by: Sammie Quon <sammiequon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#686501}