Merge "Pin bubbles to the bottom right on tablets for the prototype" into tm-qpr-dev am: 938281a0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20197655



Change-Id: I1cc3e7550b689b09aef338fd06c58d16a714056d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>