Updating trunk VERSION from 3440.0 to 3441.0 and incrementing major version to 69

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

Change-Id: Ife23e22e9bf986e42c1ca35dea0bd0bfbcb44fb1
Reviewed-on: https://chromium-review.googlesource.com/1072564Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#561750}

chrome/MAJOR_BRANCH_DATE

-MAJOR_BRANCH_DATE=2018-04-13
+MAJOR_BRANCH_DATE=2018-05-25

chrome/VERSION

-MAJOR=68
+MAJOR=69
 MINOR=0
-BUILD=3440
+BUILD=3441
 PATCH=0