Merge stage-aosp-master into pi-dev-plus-aosp

Bug: 126125118
Change-Id: Ic4892188205f92a2ff13c7e185edcc775f1bc065
tree: 86572917c18244f76bda58a0753e52c957164227
  1. library/
  2. navigationbar/
  3. tools/
  4. .gitignore
  5. OWNERS
  6. PREUPLOAD.cfg