Updating trunk VERSION from 4227.0 to 4228.0

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

Change-Id: Ic02b7e66f3e1c58cc4d7ab0ee9b2474145c7fa92
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2343851Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#796211}

chrome/VERSION

 MAJOR=86
 MINOR=0
-BUILD=4227
+BUILD=4228
 PATCH=0