Updating trunk VERSION from 3754.0 to 3755.0

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

Change-Id: Id28ee327ae28cba714b763dc07621112f94f6781
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1548735Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/heads/master@{#646658}

chrome/VERSION

 MAJOR=75
 MINOR=0
-BUILD=3754
+BUILD=3755
 PATCH=0