Merge "Add comments to the process*FromAgent methods." am: 300f6e7669 am: cba9e716fc

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1519518

Change-Id: I9d3d9d49fe6118edc4357edc1350d1f2b89f4b2a
tree: 375d5f0f9011a7e8545159eb23f9efb496bc7636
  1. core/
  2. services/
  3. tests/