Merge "Remove enable_pip_keep_clear_algorithm flag" into udc-qpr-dev am: 2e44408c am: d7cfca12

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24445694



Change-Id: I1726c40e388fcd17c95e123d2068232ccab7df03
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>