DO NOT MERGE - Merge Android 10 into master

Bug: 139893257
Change-Id: Ia5e3d32375c7e7228d46477e9269958d8f5fbdfc
tree: 8e339cb19f246ee8c174eea2fc6038d7e27b01bd
  1. .clang-format
  2. Android.bp
  3. PREUPLOAD.cfg
  4. app/
  5. doc/
  6. include/
  7. libs/
  8. tests/
  9. tools/