Examine source code of Shout

{
  "manifest_version": 2,
  "name": "Shout",
  "version": "1.23resigned1",
  "description": "Let you read and post comments on every single page over the web.",
  "icons": {
    "48": "icons/shout_icon_on.png"
  },
  "browser_action": {
    "default_icon": "icons/shout_icon_on.png",
    "default_title": "Shout"
  },
  "background": {
    "scripts": [
      "background1.js"
    ]
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "borderify1.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{64460215-65aa-4484-b9bf-d85f642693f1}"
    }
  }
}