Merge "Add a description to the params of keep clear rects APIs." into tm-dev am: f829b1332f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17772404

Change-Id: I268b6e4468b03d09002ae61b31d15a3ad58e67f1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>