[Boundary interfaces] Add a package file to hide boundary interfaces am: 8858477884
am: 4027ff7daf

Change-Id: Ie28e052226308b701ff36b75bf84d4a0a7dbc34d
tree: 0219fe732c173ba2dfb7c97695828abb8c27eab7
  1. src/
  2. BUILD.gn
  3. DEPS