Updating trunk VERSION from 3348.0 to 3349.0

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

Change-Id: I6d5289a138617312e09d7eded0d95c7266727045
Reviewed-on: https://chromium-review.googlesource.com/920827Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536943}

chrome/VERSION

 MAJOR=66
 MINOR=0
-BUILD=3348
+BUILD=3349
 PATCH=0