Merge "Reparent task back to the surface control during change transitions"...

Merge "Reparent task back to the surface control during change transitions" into udc-dev am: 545899f8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22871889



Change-Id: I6af188c2218ff5044c920091f4736077000c2ce2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>