Merge "Update transient-flags when windows are collected" into udc-dev am: 7f7fd82c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23356976



Change-Id: Ia3dd0344aca4b17cc79c4a9542731f68c0848cb7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>