But it turns out there IS an easy accessibility feature enable that on a Chromebook. Just follow these simple steps to make it work:
|Go to Chrome OS Settings, and click on "Show advanced settings"|
|Check the box to enable screen magnifier|
That's it! Now you can press Ctrl + Alt + Brightness up or Brightness down, or (my preferred method) use Ctrl + Alt + two fingers scrolling up or down on the trackpad to magnify the screen. It even works when you are sharing your screen during a Hangout, which is pretty cool.