Update Chromium

Changes:
508fda09da Add support for static-libraries to our GN integration
ba4a51bce9 [Backport] Speculative fix for mac DCHECK failure
52bf8b4531 Support non-base::Thread GPU thread
156c2b70ce Disable "some invariants violation checks" for Qt

Change-Id: Ie534e8bc92f89017462d89b5fea8deb0129f3015
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>