commit d17b445e932a10c875cea034b037b19d30e47a8c
author lawrencewu <lawrencewu@chromium.org> Tue Dec 13 19:54:32 2016
committer Commit bot <commit-bot@chromium.org> Tue Dec 13 19:58:44 2016
tree 8f4d37f177167e245fbdc2aa064ac0b705732a5f
parent 48640579ab394d7e5662524e135096c72a9964c8

Share field trial allocator on Mac

This CL shares the field trial allocator on MacOS. It depends on Mac having
POSIX shared memory support, but other than that it is basically the same mechanism as that in the Linux CL: https://codereview.chromium.org/2530573002/. We basically just need to edit some ifdefs.

NOTE: turning on NOPRESUBMIT because the dependent CL re-adds some banned calls to AllowIO.

BUG=663912
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2565683003
Cr-Commit-Position: refs/heads/master@{#438265}