Merge cherrypicks of ['googleplex-android-review.googlesource.com/26518908'] into sc-platform-release.

Change-Id: Ibe38ffb345bf6ef8c15802f32400534b986cfa42
tree: 89d7669acff4cf4ca65c74b830f0cd29fe3d0bd9
  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