Merge "Update BubblePositioner to have some things for bubble bar" into udc-dev am: 82465873

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22209306



Change-Id: If13107de67f80b114e5e0b19c3be357344659793
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>