Adding a 3rd-Party Search Engine in Firefox for iOS

When a user selects a search field, an icon appears in the tray above the keyboard.

Once pressed, a notification appears asking if they would like to add this site as a Quick-Search engine.

If the user chooses to add the search engine, a notification appears at the bottom of the screen informing the user that the search engine has been added, and the icon is removed. When the user clicks anywhere on the screen the notification disappears.

If the search engine has already been added or previously exists, the icon is greyed out in the tray.