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

Merge "Update transient-flags when windows are collected" into udc-dev am: 7f7fd82c am: b760ddc1 am: ac862806 am: 8ab7a311

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



Change-Id: Ib28d03ae7e01a522eada6c8787455087a6d22469
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>