Pointless warning spam drowns out real issues in the logs all the time. You cannot expect an end user to fix chromium based applications or stop using them, so all you end up doing is making the system less usable and less secure.
For GUI notifications open the sealert app and disable alerts. For journal/syslog reports disable the setroubleshoot daemon dispatch plugin for auditd:
sed -i 's/active.=.yes/active = no/' /etc/audit/plugins.d/sedispatch.conf
service auditd restart