Examine source code of AdFly Skipper Ultimate

{
  "manifest_version": 2,
  "icons": {
    "48": "icon/48.png",
    "128": "icon/128.png",
    "150": "icon/150.png",
    "176": "icon/176.png",
    "512": "icon/512.png"
  },
  "default_locale": "en",
  "name": "AdFly Skipper Ultimate",
  "description": "AdFly Skipper Ultimate",
  "homepage_url": "https://fastforward.team",
  "version": "0.2237",
  "author": "FastForward Team",
  "browser_specific_settings": {
    "gecko": {
      "id": "adflyskipperultimate@example.com",
      "strict_min_version": "48.0"
    }
  },
  "permissions": [
    "alarms",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "options_ui": {
    "page": "html/options.html",
    "open_in_tab": true
  },
  "browser_action": {
    "default_icon": {
      "48": "icon/48.png",
      "128": "icon/128.png",
      "150": "icon/150.png",
      "176": "icon/176.png",
      "512": "icon/512.png"
    },
    "default_popup": "html/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "html/before-navigate.html",
    "html/blocked.html",
    "html/crowd-bypassed.html",
    "html/firstrun.html",
    "html/firstrun-noscript.html",
    "html/options.html",
    "icon/48.png"
  ]
}