UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.98 Safari/537.36 OPR/44.0.2510.857

Example URL:
https://s3.amazonaws.com/mozilla-games/ZenGarden/EpicZenGarden.html

Steps to reproduce the problem:
1. Start any chromium 57 based browser
2. Go to a site that uses WebGL 1 or 2 (For example: https://s3.amazonaws.com/mozilla-games/ZenGarden/EpicZenGarden.html or https://playcanv.as/e/p/44MRmJRU/
3. Try to run it

What is the expected behavior?
The game should start playing

What went wrong?
Every site says that my browser doesent support WebGL...

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? Yes chromium 56

Does this work in other browsers? Yes

Chrome version: 57.0.2987.110  Channel: stable
OS Version: OS X 10.11.6
Flash Version:
 

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