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These classes are tied to process creation so it is very unlikely they
can be overflowed without also exhausting system resources. It is ok to
set a good example though.

Bug: 1101547
Change-Id: I2d109a6e9c7ed8f4094495af5de994ae18adb757
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2278319
Commit-Queue: Alex Gough <ajgo@chromium.org>
Reviewed-by: Will Harris <wfh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#785965}