Yes, I'm hoping to remove the polyfill for Firefox at some point, and add support for Edge when they have extension support. We'll see how closely they stick to

Yes, I'm hoping to remove the polyfill for Firefox at some point, and add support for Edge when they have extension support. We'll see how closely they stick to the chrome.* apis. Firefox is implementing them but there are always some slight differences, e.g. in Chrome you can redirect in the onBeforeRequest event but you must do it in onBeforeSendHeaders in Firefox. It probably won't be possible to have the exact same code for all browsers without any special cases, but hopefully we can get pretty close :)