Updating trunk VERSION from 4044.0 to 4045.0 and incrementing major version to 82

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

Change-Id: I7b61247ec4a9b8c2ae610ea7a7d4ec621886b45f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2032784Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#737199}

chrome/MAJOR_BRANCH_DATE

-MAJOR_BRANCH_DATE=2019-12-06
+MAJOR_BRANCH_DATE=2020-01-31

chrome/VERSION

-MAJOR=81
+MAJOR=82
 MINOR=0
-BUILD=4044
+BUILD=4045
 PATCH=0