Merge "Make Class.getPackageName public." am: 3a76c4c9aa am: 7a0acb4d34

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1519502

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ia30633196eef2c2fdbebde3ad87c9e19c3c8b58e