Merge ee1b82cec54349ed65a23f8348285b692288f71f on remote branch

Change-Id: I8d67cc3752a6ffe011a7f46dcc4188f0c53c0db3
tree: 1a8fa2d68feac248470388459167ef2e15b32103
  1. nn/
  2. .clang-format
  3. CleanSpec.mk
  4. CPPLINT.cfg
  5. OWNERS
  6. PREUPLOAD.cfg