UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2702.0 Safari/537.36

Steps to reproduce the problem:
1. Create a div element
2. Set a value to 'content' CSS property using CSS
3. Get the value of the content css property using window.getComputedStyle(testDiv,null)["content"];

What is the expected behavior?
It should return the value assigned to the property 'content' (as it happens in Chrome 49 or lower)

What went wrong?
It returns the value 'normal' instead of the corresponding value.

Here is a link with a small piece of code. If you play it in Chrome 51 and Chrome 49 you can see the difference.

Did this work before? Yes Chrome 49

Chrome version: 51.0.2702.0  Channel: canary
OS Version: OS X 10.10.4
Flash Version: Shockwave Flash 21.0 r0