Updating trunk VERSION from 3375.0 to 3376.0

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

Change-Id: Idefe84c799bbaf82f84da2892339cb3265c219d9
Reviewed-on: https://chromium-review.googlesource.com/966496Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#543964}

chrome/VERSION

 MAJOR=67
 MINOR=0
-BUILD=3375
+BUILD=3376
 PATCH=0