GitLab

Extend the hotseat in overview mode, and hide it in split view mode.

Bug: 1009550, 1009716
Change-Id: I2494c07a2d9bf486ffd4be5a0da4779c855cd59e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1872189Reviewed-by: Alex Newcomer <newcomer@chromium.org>
Commit-Queue: Manu Cornet <manucornet@chromium.org>
Cr-Commit-Position: refs/heads/master@{#707976}