Examine source code of Inet Usage

{
  "manifest_version": 2,
  "name": "Inet Usage",
  "version": "1.8.47",
  "description": "If a user know how much the data usage, they can be more careful (especially in Indonesia, most of the internet uses mobile data/quota).",
  "background": {
    "scripts": [
      "js/background.js",
      "js/backgroundAjax.js",
      "js/bg_ovFuncs.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/content_script.js",
        "js/cs_youtube.js",
        "js/cs_othervideo.js",
        "js/cs_audiomusic.js",
        "js/cs_images.js",
        "js/cs_popup.js"
      ]
    }
  ],
  "icons": {
    "64": "css/pally.png"
  },
  "browser_action": {
    "default_title": "Inet Usage",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "master-paladin@rotmg.com",
      "strict_min_version": "68.0"
    }
  },
  "permissions": [
    "storage",
    "webNavigation",
    "<all_urls>",
    "tabs",
    "unlimitedStorage"
  ]
}