I'm using Chrome 59.0.3071.115 and Chromium 61.0.3159.0 (snapshot build) on OSX in headless mode, launching them from a terminal with these flags:
chrome --headless --disable-gpu
Everything works as expected, but a Chrome/Chromium dock icon is always displayed during their execution.
Is there a way to execute them in headless mode without having this icon always being displayed?