Merge "Modify the default position of bubbles on tablet to be centered" into udc-qpr-dev am: 1f496165ce am: 97bfd2f96b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24315280

Change-Id: I755b31ae62c370a1165e24be9a9140ce5a6adc34
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>