Examine source code of Ball Control Game v2

{
  "manifest_version": 2,
  "name": "Ball Control Game",
  "version": "1.0",
  "description": "Control the ball to avoid obstacles in this fun game.",
  "permissions": [],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{203b386e-ad7b-4dd8-a805-d67382070681}"
    }
  }
}