Merge cherrypicks of ['googleplex-android-review.googlesource.com/21680607'] into tm-qpr2-release.

Change-Id: I9da2961b40d275a4a0175bfd3be99b772b6ba0ce
tree: f2117a31825919ccd03926db4b331fc1503d834f
  1. intf/
  2. pn8x/
  3. snxxx/
  4. .clang-format
  5. Android.bp
  6. METADATA
  7. OWNERS
  8. PREUPLOAD.cfg