Incrementing VERSION to 79.0.3909.1

TBR=mmoss@chromium.org

Change-Id: I2f09d8916fee6440c36bd15e384274327b10c8f6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1797208


Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/3909@{#2}
Cr-Branched-From: fef3d922-refs/heads/master@{#695440}

chrome/VERSION

 MAJOR=79
 MINOR=0
 BUILD=3909
-PATCH=0
+PATCH=1