Examine source code of criframeplayer

{
  "name": "Crunchyroll iFrame Player",
  "version": "1.0.2",
  "description": "Permite ver todos os vídeos do crunchyroll gratuitamente.",
  "author": "itallolegal",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_title": "Crunchyroll iFrame Player",
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://www.crunchyroll.com/*",
        "https://www.crunchyroll.com/*"
      ],
      "css": [
        "content.css"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "manifest_version": 2
}