Merge "Send bubble state updates to launcher & respond to launcher" into udc-dev am: 9fa5395f am: 72408379

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22209311



Change-Id: I41f23e0fae79826efbe8cd14331002e390ae44fd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>