Examine source code of HashIt

{
  "manifest_version": 2,
  "name": "HashIt",
  "description": "Identify web pages",
  "version": "1.0.7resigned1",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "http://*/*",
    "tabs",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "jquery.js",
        "key_event.js"
      ],
      "css": [
        "style.css"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_action": {
    "default_icon": {
      "32": "icon.png"
    },
    "default_title": "HashIt",
    "default_popup": "popup/index.html"
  },
  "icons": {
    "32": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{38ace8b1-5499-4698-82b5-566f86d94913}"
    }
  }
}