Examine source code of SEO Minion

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "3.20",
  "default_locale": "en",
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "browser_action": {
    "default_icon": "/img/logo_on.png"
  },
  "background": {
    "scripts": [
      "/lib/jquery.min.js",
      "/js/conf.js",
      "/js/IndexedDB.js",
      "/js/Cache.js",
      "/js/Redirect.js",
      "/js/Robots.js",
      "/js/RobotsParser.js",
      "/js/Helpers.js",
      "/js/App.js",
      "/js/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "/js/cs-meta.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*/*"
      ],
      "include_globs": [
        "*://www.google.*/*"
      ],
      "js": [
        "/lib/jquery.min.js",
        "/js/Prefix.js",
        "/js/prefix-init.js",
        "/js/CSV.js",
        "/js/Helpers.js",
        "/js/cs-google-prerender.js",
        "/js/cs-google.js"
      ],
      "css": [
        "/css/cs-google.css"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*/*"
      ],
      "include_globs": [
        "*://www.google.*/*"
      ],
      "js": [
        "/lib/jquery.min.js",
        "/js/Prefix.js",
        "/js/prefix-init.js",
        "/js/cs-serp-iframe.js"
      ],
      "all_frames": true,
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://seominion.com/service/widget.php*",
        "https://seominion.com/service/serpWidget.php*",
        "https://keywordseverywhere.com/seominion/service/widget.php*",
        "https://keywordseverywhere.com/seominion/service/serpWidget.php*"
      ],
      "all_frames": true,
      "js": [
        "/js/cs-iframe-resize.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "/img/*",
    "/html/*"
  ],
  "permissions": [
    "clipboardWrite",
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "activeTab",
    "tabs",
    "http://*/*",
    "https://*/*",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{80276c2b-b76c-4f9a-9b8f-8862dead8c3d}"
    }
  }
}