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This target was missed in 2585915c. The
CL also adds additional locking annotations to MachPortRendezvousServer.

Bug: 1106353, 1013082
Change-Id: Id2fe4f707dc90efd79c0354de73e5066b8715713
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2302942Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#789183}