Chrome Version: 72.0.3583.0
OS: Android

What steps will reproduce the problem?
(1) Enable download home v2 feature.
(2) Open download home.
(3) Close download home.

A short period of black screen appears, 

 8127 I Choreographer: Skipped 43 frames!  The application may be doing too much work on its main thread.

Some stuff should happen on background thread.