Updating trunk VERSION from 4285.0 to 4286.0

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

Change-Id: I0f1026e2570f622c0261e359d5bb0e9a8f7e318c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2453374Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#814532}

chrome/VERSION

 MAJOR=88
 MINOR=0
-BUILD=4285
+BUILD=4286
 PATCH=0