added "--disable-site-isolation-trials" to Chrome_without_security

[gkostov]

This SO page https://stackoverflow.com/questions/53080472/chrome-disable-web-security-no-longer-works got me to what has been described here https://www.chromium.org/Home/chromium-security/site-isolation#TOC-Known-Issues so I thought it will be useful for others if the docs mention that fact :)

macOS 10.14, Chrome 75.0.3770.100
I had a problem testing a site and kept getting "Error: Uncaught SecurityError: Blocked a frame with origin..." even if I had provided "--disable-web-security" as per the example in the documentation. Seems Chrome has changed its security policies and that flag is no longer enough to get it out of the the CORS cage.

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[gkostov]

ok, I signed it!

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[rogeriopvl]

Looks good, thanks!