Examine source code of Commander

{
  "manifest_version": 2,
  "name": "Commander",
  "version": "0.9resigned1",
  "description": "Command launcher to control websites and the browser.",
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "./content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "./background.js"
    ]
  },
  "permissions": [
    "*://*/*",
    "tabs",
    "activeTab",
    "bookmarks"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b94dcae6-50fc-4a85-ac9c-79657e47200b}"
    }
  }
}