UserAgent: Mozilla/5.0 (X11; CrOS x86_64 10718.71.2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.87 Safari/537.36
Platform: 10718.71.2 (Official Build) beta-channel samus

Steps to reproduce the problem:
1. enable the chrome://flags/#enable-system-tray-unified 
2. Connect multiple audio input/output devices

What is the expected behavior?
You will be able to select which input/output device to use from the system tray

What went wrong?
There is no option to select which audio device to use. 

Did this work before? Yes Works with the flag unset (v68)

Chrome version: 68.0.3440.87  Channel: beta
OS Version: 10718.71.2
Flash Version: 30.0.0.134 /opt/google/chrome/pepper/libpepflashplayer.so

As a user that has 2 external sets of speakers and 1 additional microphone, who works from my Chromebook daily as my work device, the ability to select audio devices is important.  Please bring back the ability to select audio devices, even if it is within the chrome://system page.