Examine source code of RP_form

{
  "manifest_version": 2,
  "name": "RP_form",
  "version": "1.3",
  "description": "Extensão para preenchimento automático de formulários",
  "permissions": [
    "webRequest",
    "tabs",
    "activeTab",
    "<all_urls>"
  ],
  "browser_action": {
    "default_icon": "button/button3.png",
    "default_title": "RP_form",
    "default_popup": "popup/rp_form.html"
  },
  "web_accessible_resources": [
    "button/button3.png",
    "ckeditor/ckeditor.js",
    "button/start.ico"
  ],
  "content_scripts": [
    {
      "js": [
        "/content_scripts/rp_form_script.js",
        "/content_scripts/rp_form_script1.js"
      ],
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "run_at": "document_end"
    }
  ]
}