Examine source code of Session Share

{
  "description": "Mit diesem Plugin können Webseiten-Sessions geteilt werden",
  "manifest_version": 2,
  "name": "Session Share",
  "version": "1.1",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentscript.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "underscore.js",
      "background.js"
    ]
  },
  "permissions": [
    "cookies",
    "*://*/*",
    "contextMenus",
    "clipboardWrite"
  ],
  "omnibox": {
    "keyword": "sessionshare"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4e24832c-06f6-44bf-be49-479156d7c683}"
    }
  }
}