Return Build ID by const reference.

Bug: 169842943
Change-Id: Ie8ea4bf4cdd34d76a5135402e59a1a39001e6b9a
2 files changed
tree: 29cfadea0f7a26e437c2b750c68f114fc8cf7aec
  1. libbacktrace/
  2. libunwindstack/
  3. OWNERS
  4. PREUPLOAD.cfg