Updating trunk VERSION from 3951.0 to 3952.0

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

Change-Id: Icab170512ca6ee133efd358524c9a8d92abaa2dc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1879446Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#709743}

chrome/VERSION

 MAJOR=80
 MINOR=0
-BUILD=3951
+BUILD=3952
 PATCH=0