recipe_engine:
  https://crrev.com/e5b95408b9e4b89a7b88f67c40b3af79a88a7ad7 [step_runner] Specify close_fds to avoid leaking non-std handles to steps. (iannucci@chromium.org)
  https://crrev.com/bcd44328140e7912e96e2fd0ae1c76222ebca167 Revert "[step_runner] Specify close_fds to avoid leaking non-std handles to steps." (tandrii@chromium.org)

TBR=tandrii@google.com

Bug: 930038
Change-Id: Ia8cef1190df752029980812fa3a4e422f3a54dee
Reviewed-on: https://chromium-review.googlesource.com/c/1460142Reviewed-by: Robbie Iannucci <iannucci@chromium.org>