GitLab

This change adds implementation and testing to place grid
items in a densely packed grid.

Bug: 1045599
Change-Id: I7640fc12e7cc1c1f284848eb01ca949d6a041261
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2493828
Commit-Queue: Jacques Newman <janewman@microsoft.com>
Reviewed-by: Kurt Catti-Schmidt <kschmi@microsoft.com>
Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Christian Biesinger <cbiesinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#820929}