UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/56.0.2924.76 Chrome/56.0.2924.76 Safari/537.36

Steps to reproduce the problem:
1. create a peerconnection
2. call setRemoteDescription
2. the peerconnections canTrickleIceCandiates attribute is undefined (it does not exist)
3. 

What is the expected behavior?
Described in http://w3c.github.io/webrtc-pc/#dom-rtcpeerconnection-cantrickleicecandidates

What went wrong?
kind of blocked on https://bugs.chromium.org/p/webrtc/issues/detail?id=7443

Did this work before? No 

Does this work in other browsers? Yes

Chrome version: 56.0.2924.76  Channel: n/a
OS Version: 
Flash Version: Shockwave Flash 16.0 r0

test @ https://github.com/w3c/web-platform-tests/pull/5382