Merge "Add javadoc for (Persistable)Bundle.EMPTY" into sc-dev am: e1127fccde

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/13425151

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I6f507b19dc26011b1cbc85f59418cf0d395ace9e