tree 4b0425fb7a87761781ec2cea4e0761ca58719ea6
parent 2cd85a8ae055a79e7557deb06e776b4acb628b53
author Yunfan Chen <yunfanc@google.com> 1568263300 +0900
committer Yunfan Chen <yunfanc@google.com> 1568881919 +0900

Remove animation background color

The background color was used to show while animating window transition.
This is no longer used, and it's safe to remove it.

Bug: 140913423
Test: go/wm-smoke

Change-Id: Ib8dc40c9762f4566ca21947579deb0d50990e8a5