am a67f19de: Adds a few utilities to ProtoBufUtil, integrating over from mainline

Merge commit 'a67f19deb0794784d1b841bc1900328103af03c5'

* commit 'a67f19deb0794784d1b841bc1900328103af03c5':
  Adds a few utilities to ProtoBufUtil, integrating over from mainline