Incrementing VERSION to 70.0.3518.1

TBR=mmoss@chromium.org

Change-Id: Ic07ae7b0f07410a184926d498c140ef1b73435a6
Reviewed-on: https://chromium-review.googlesource.com/1171570
Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/branch-heads/3518@{#2}
Cr-Branched-From: 83fec715c8abfa2a74768bc37b245728e60a899e-refs/heads/master@{#582029}
1 file changed