Hi!
Mozilla put together a tool to help test Chrome web extensions for compatibility with Firefox. I took the liberty of running the Mozbar extension through this tool, and there is only one issue to be resolved before the existing Chrome extension will run on Firefox. Check it out:
https://www.extensiontest.com/test/857d5700-a855-11e7-9c3d-35e0bb5262dd
app.runtime is not supported
found in the following locations:
scripts/browser_button.js:46697
scripts/content_page.js:60933
Just a couple changes and this will work on Firefox! Any chance we'll see it soon?