GitLab

The overview close icons shall fade in with special animation parameters
when a window gets snapped (either activating split view or taking the
place of a lone snapped window). These parameters are specified here:
https://mccanny.users.x20web.corp.google.com/www/splitscreen-motion/index.html#window-drop

Test: manual
Bug: 934977
Change-Id: Ib678560f5b1be00fa6d69e848d476ad2f88f98fc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1570218
Commit-Queue: Avery Musbach <amusbach@chromium.org>
Reviewed-by: Mitsuru Oshima (Slow 4/22-26) <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653627}