Updating trunk VERSION from 3272.0 to 3273.0

TBR=govind@chromium.org

Change-Id: Iab9bd0c975a83575a639dc4d95c86ed8cd67599f
Reviewed-on: https://chromium-review.googlesource.com/777594Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517698}

chrome/VERSION

 MAJOR=64
 MINOR=0
-BUILD=3272
+BUILD=3273
 PATCH=0