Shared components used by Firefox and other Mozilla software, including handling of Web content; Gecko, HTML, CSS, layout, DOM, scripts, images, networking, etc. Issues with web page layout probably go here, while Firefox user interface issues belong in the Firefox product. (More info)
Created attachment 8446441[details][diff][review]
Support "Symbol" key value on Android and Gonk
Although, I'm not sure how can this key event fire.
However, "Symbol" is defined for Android's Symbol modifier. So, let's map it to "Symbol".