Mark Mentovai c93fcf8278 In MachMultiprocess-based tests, the child must wait for the parent to
finish.

It was possible for the child process to exit before the parent had a
chance to complete the pid_for_task() portion of its verification.

TEST=util_test
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/586053002
2014-09-22 13:06:12 -04:00
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