Examine source code of eScan Web Blocker

{
  "description": "eScan Web Blocker blocks access to the webpage if they find the keyword in the web page title, description and/or content.",
  "version": "2.2.1",
  "name": "eScan Web Blocker",
  "manifest_version": 2,
  "icons": {
    "17": "img/escan_logo-16.png",
    "75": "img/escan_logo.png"
  },
  "background": {
    "scripts": [
      "background.bundle.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "19": "img/escan32x32.png",
      "40": "img/escan_logo-38.png"
    },
    "default_title": "eScan Web Blocker",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "styles/content_script.css"
      ],
      "js": [
        "content_script.bundle.js"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "storage",
    "contextMenus",
    "<all_urls>"
  ]
}