am bcc0d3b8: Merge "Update protobuf library from 2.3 to 2.6."

* commit 'bcc0d3b89334f32c9cbf4ca0266e6b7f551d7b9a':
  Update protobuf library from 2.3 to 2.6.
tree: ec33750bd0b8b1fc4e72f437f9d6f586d99863de
  1. src/
  2. test/
  3. android-webrtc.mk
  4. Android.mk
  5. MODULE_LICENSE_BSD
  6. NOTICE
  7. TODO