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lawrencewu authored
This re-adds POSIX shared memory support on Mac. This is for use in the sharing of field trials using shared memory. You can see the design doc for this project at: https://docs.google.com/document/d/1mTjD99PchmCGYtLvpxaXFObVnid1zmXIsWBI7GjuJgo/ and the motivation for this change under "Port to other platforms". NOTE: turning on NOPRESUBMIT because this re-adds some banned calls to AllowIO. BUG=671228 NOPRESUBMIT=true Review-Url: https://codereview.chromium.org/2555483002 Cr-Commit-Position: refs/heads/master@{#437709}
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