Updating trunk VERSION from 4309.0 to 4310.0

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

Change-Id: I4e06a7a480bd6a1f6743fbd035edd52f051f5eaf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2510377Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#822709}

chrome/VERSION

 MAJOR=88
 MINOR=0
-BUILD=4309
+BUILD=4310
 PATCH=0