tabCapture.capture is not supported

   This API has not been implemented by Firefox.

   found in the following locations:
       content.js:1
       options.js:3
   tabCapture.onStatusChanged is not supported

   This API has not been implemented by Firefox.

   found in the following locations:
       content.js:1
       options.js:469

Here is the extension i would like to convert https://chromewebstore.google.com/detail/equalizer-for-chrome-brow/abikfbojmghmfjdjlbagiamkinbmbaic here is what extension test .com says 2 compatibility issues found: What are compatibility issues? Compatibility issues warn about the usage of APIs or permissions not available in the latest version of Firefox. tabCapture.capture is not supported This API has not been implemented by Firefox. found in the following locations: content.js:1 options.js:3 tabCapture.onStatusChanged is not supported This API has not been implemented by Firefox. found in the following locations: content.js:1 options.js:469 How do I fix? Thanks for any help!