Examine source code of SmarterTV

{
  "manifest_version": 2,
  "name": "SmarterTV",
  "version": "0.4.0",
  "description": "SmarterTV makes any non smart TV smarter",
  "browser_specific_settings": {
    "gecko": {
      "id": "{8e9a5d40-0db2-408e-83d7-2617e13a10d2}",
      "strict_min_version": "59.0a1"
    }
  },
  "icons": {
    "32": "icons/smartertv_32.png",
    "64": "icons/smartertv_64.png",
    "128": "icons/smartertv_128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "<all_urls>"
  ],
  "browser_action": {
    "default_icon": {
      "32": "icons/smartertv_32.png"
    },
    "default_title": "SmarterTV",
    "default_popup": "panel/panel.html",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "api.js",
      "background.js"
    ]
  }
}