Update Chromium

Changes:
cfe8c60903 [Backport] Reject getUserMedia calls in builds with WebRTC disabled.
05b7fdee0a Add .gitignore for *.pyc

Change-Id: I00b195cdb627ebb90d006a1e92efb91ecef854df
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>