For security/privacy reasons, the browser process of Ash in ChromeOS
redirects its logs from /var/log/chrome to the cryptohome.
However its child processes were not doing that, causing some
messages to still being logged in the system-wide log.
A previous CL (http://crrev/c/3863052) fixed this for all the existing
child processes; this CL also updates the log file for the Zygote(s),
so that new child processes inherit the correct log file descriptor.
BUG=1348839
TEST=Printed warnings from inside Zygote, verified it goes into
cryptohome's log file
Change-Id: If37232d0697ac5396fa15a65b05895d20af6bf17
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3867342
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Andrea Orru <andreaorru@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1048899}