Examine source code of Privacy Protector

{
  "manifest_version": 2,
  "name": "Privacy Protector",
  "version": "3.7",
  "description": "Privacy Protector to disable press extorsions.",
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "browsingData"
  ],
  "browser_action": {
    "default_icon": {
      "48": "tuttipleni.png"
    },
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "tuttipleni.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "*://*.elmundo.es/*",
        "*://*.elpais.com/*",
        "*://*.expansion.com/*"
      ],
      "js": [
        "content.js"
      ]
    },
    {
      "matches": [
        "*://*.elpais.com/*"
      ],
      "js": [
        "elpais.js"
      ]
    },
    {
      "matches": [
        "*://*.elmundo.es/*",
        "*://*.expansion.com/*"
      ],
      "js": [
        "elmundo.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2a59f9e1-8d9f-46cb-95ad-1429de65231f}"
    }
  }
}