Merge remote-tracking branch 'aosp/upstream' into master

* aosp/upstream:
  Refactor test running to improve parallelism
  Clean up unnecessary dependencies
  Allow build.ninja regeneration (fix Soong globs)
  Cleanup outfile args in bootstrap/bootstrap.go
  Support implicit outputs

Bug: 32574042
Test: m -j
Change-Id: I075f9b71bfe1746598091ba0efc729b999aa4f6f