GitLab

On ARM64 builds of mini_installer the compiler generates calls to
memcpy. Since we don't link mini_installer with the CRT (to guarantee
that it is kept small) we have to implement this function.

Bug: 931856
Change-Id: I3e1909b6ebf6255e0da981f20282562c33547a9b
Reviewed-on: https://chromium-review.googlesource.com/c/1476527
Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
Reviewed-by: Greg Thompson <grt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#633843}