am 318c8e76: am 17c6426e: Merge "Document the worker_threads option."
am 318c8e76: am 17c6426e: Merge "Document the worker_threads option."

* commit '318c8e76ee8f47fb9f077e419713cf4dbb454788':
  Document the worker_threads option.

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build