UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.167 Safari/537.36

Steps to reproduce the problem:
1. Add --js-flags="--expose-gc" on startup
2. Try to call window.gc(), gc() in js
3. Method not found

What is the expected behavior?

What went wrong?
Does chromium v52 support this flag? Or is there any way where i can trigger manually the garbage collector from js*

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 52  Channel: n/a
OS Version: 
Flash Version: