The 2nd one worked for me (Header set X-XSS-Protection "0").
My problem was that I could not update product pages. I would get the message: 'Chrome detected unusual code on this page and blocked it to protect your personal information...'
Thank you for this fix. I like the fact that it works at the Admin level instead of the whole site.
I am using Opera with Chrome/58.0.3029.81.
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