Examine source code of VisusGG

{
  "manifest_version": 2,
  "name": "VisusGG",
  "description": "VisusGG, a browser extension by x3picF4ilx (Bytenote) & MrMaxim, aims to improve the user experience on FACEIT's platform.",
  "version": "2.3.7",
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "run_at": "document_end",
      "matches": [
        "https://www.faceit.com/*",
        "https://beta.faceit.com/*"
      ],
      "js": [
        "contentFaceIt.js"
      ],
      "all_frames": false
    },
    {
      "run_at": "document_end",
      "matches": [
        "https://*.steamcommunity.com/profiles/*",
        "https://*.steamcommunity.com/id/*"
      ],
      "exclude_matches": [
        "https://*.steamcommunity.com/id/*/allcomments",
        "https://*.steamcommunity.com/profiles/*/allcomments"
      ],
      "js": [
        "contentSteam.js"
      ],
      "css": [
        "contentSteam.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "imgs/f00.png",
    "imgs/f01.png",
    "imgs/f02.png",
    "imgs/f03.png",
    "imgs/f04.png",
    "imgs/f05.png",
    "imgs/f06.png",
    "imgs/f07.png",
    "imgs/f08.png",
    "imgs/f09.png",
    "imgs/f10.png"
  ],
  "permissions": [
    "cookies",
    "storage",
    "https://*.faceit.com/*",
    "https://www.steamcommunity.com/profiles/*",
    "https://www.steamcommunity.com/id/*"
  ],
  "browser_action": {
    "default_icon": "icon-48.png",
    "default_popup": "popup.html",
    "default_title": "VisusGG"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{13c012e0-7b3e-48d8-8067-3f8504f91913}",
      "strict_min_version": "58.0"
    }
  }
}