Examine source code of Stakataka

{
  "manifest_version": 2,
  "name": "Stakataka",
  "description": "Cache Storage Visualizer",
  "version": "0.0.3",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "browser_action": {
    "default_title": "Stakataka",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7b72d9b3-0bfe-4e8d-b614-52e778701bb8}"
    }
  }
}