Merge cherrypicks of ['googleplex-android-review.googlesource.com/26518905'] into security-aosp-tm-release.

Change-Id: I000aebfba368e2025c786d724cd79078ef151d1d
tree: 90885751619b522315f329c0ada56a60e9a946f0
  1. base/
  2. benchmarks/
  3. fuzzer/
  4. include/
  5. tests/
  6. Android.bp
  7. EventFlag.cpp
  8. FmqInternal.cpp
  9. OWNERS
  10. PREUPLOAD.cfg
  11. TEST_MAPPING