Updating trunk VERSION from 3409.0 to 3410.0

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

Change-Id: Ic9ad97d4381e555ba69f55e72152965098041e92
Reviewed-on: https://chromium-review.googlesource.com/1029670Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553879}

chrome/VERSION

 MAJOR=68
 MINOR=0
-BUILD=3409
+BUILD=3410
 PATCH=0