Prevent prochook.dll from loading in sandboxed processes.

This DLL is causing crashes.

BUG=974722

Change-Id: Id241d90f582e28c0eb8a5cbf5bf7130a8a8e1cdc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1676931
Reviewed-by: Chris Hamilton <chrisha@chromium.org>
Commit-Queue: Chris Hamilton <chrisha@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672287}
1 file changed