Inject an iframe to perform copy on Chrome + Keyboard Shortcut

[yorkxin]

Summary

It seems that injecting an iframe (an HTML page bundled in the extension) can work around Chrome's document.execCommand restriction. Not sure if this is a security hole though. At least it works on my machine.

(I am doubting the meaning of my life)

Tests

• [x] Chrome stable (macOS)
• [x] Firefox stable (macOS)
• [ ] Chrome stable (Windows)
• [ ] Firefox stable (Windows)

Optional:

• [ ] Chrome beta (macOS)
• [ ] Firefox beta (macOS)
• [ ] Chrome beta (Windows)
• [ ] Firefox beta (Windows)