Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1952387 Change-Id: Idee1d783a52db16a7fb7aeadb11b69564e72aca5
WM Shell Flicker Test Package
Please reference the following links
on what is Flicker Test and how to write a Flicker Test
To run the Flicker Tests for WM Shell, simply run atest WMShellFlickerTests