overview: Do not animate minimized window behind maximized window.

If there is a maximized window on top the minimized windows should just
already be there when entering instead of fading in.

Uses the same logic as the transforming windows which are behind a
maximized window by delaying the opacity setting until that logic is
calculated.

Test: manual
Bug: 941823
Change-Id: Idc7386bccefe5c0a9aa849e3c2213d628264afc3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1525051
Commit-Queue: Sammie Quon <sammiequon@chromium.org>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#642570}
3 files changed