Updating trunk VERSION from 3266.0 to 3267.0

TBR=govind@chromium.org

Change-Id: Id266c280b0e1e305adc5a7162d0c14791a26644c
Reviewed-on: https://chromium-review.googlesource.com/764678Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#515859}

chrome/VERSION

 MAJOR=64
 MINOR=0
-BUILD=3266
+BUILD=3267
 PATCH=0