Updating trunk VERSION from 3862.0 to 3863.0

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

Change-Id: I65dd09fac56f15df03f4128cff6d51186ac3b96b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1715746Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#680085}

chrome/VERSION

 MAJOR=77
 MINOR=0
-BUILD=3862
+BUILD=3863
 PATCH=0