UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2714.0 Safari/537.36

Example URL:
http://jsfiddle.net/sao57n60/1/

Steps to reproduce the problem:
1. Enable WebGL 2.0 in chrome://flags/ and restart the browser
2. Open JavaScript console
3. Go to http://jsfiddle.net/sao57n60/1/

What is the expected behavior?
No error should be shown in console

What went wrong?
Console prints the following WebGL error:

WebGL: INVALID_ENUM: texStorage2D: invalid internalformat

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? N/A 

Does this work in other browsers? Yes 

Chrome version: 52.0.2714.0  Channel: canary
OS Version: OS X 10.11.0
Flash Version: Shockwave Flash 21.0 r0

This works in Firefox. I'd expect texStorage2D to accept compressed formats when the WEBGL_compressed_texture_s3tc extension is present. This causes issues with textures rendering correctly in WebGL 2.0 in Unity content.