Updating trunk VERSION from 4161.0 to 4162.0

# This is an automated release commit.
# Do not revert without consulting chrome-pmo@google.com.
NOAUTOREVERT=true
TBR=pbommana@chromium.org

Change-Id: I8ec213aa857d614530c18fa657c5055ff746cde3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2224055Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#773542}

chrome/VERSION

 MAJOR=85
 MINOR=0
-BUILD=4161
+BUILD=4162
 PATCH=0