Merge "Fix wallpaper flicker when quick switching apps using taskbar swipe"...

Merge "Fix wallpaper flicker when quick switching apps using taskbar swipe" into udc-dev am: 36208fb4 am: b000e23f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23262476



Change-Id: I4122b5f3e443f35d2d5a288e7600b4974e2f7449
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>