Sometime, you can see this error:
This page isn’t working Chrome detected unusual code on this page and blocked it to protect your personal information (for example, passwords, phone numbers, and credit cards). Try visiting the site's homepage. ERR_BLOCKED_BY_XSS_AUDITOR
A case i can show: when you post a HTML code from a textarea form.
Ex: POST /url
in page /url you can add a header:
Do by PHP: