Merge "Resize dismiss circle to match bubble size." into rvc-dev am: 75c9551a am: f23dcf93 am: 8405ce38

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11689896

Change-Id: I25f8efdd996e4470bd72d13378f3d83e60236c21