Updating trunk VERSION from 4162.0 to 4163.0

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

Change-Id: I622f9f642fb456f6c540f206f8e968ab4f1b6a54
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2224021Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#773979}

chrome/VERSION

 MAJOR=85
 MINOR=0
-BUILD=4162
+BUILD=4163
 PATCH=0