Examine source code of Simple Form History

{
  "manifest_version": 2,
  "name": "Simple Form History",
  "version": "1.1resigned1",
  "description": "Automatically stores the latest data in input fields as you type. Alpha release.",
  "author": "Kenneth",
  "icons": {
    "48": "favicon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "script.js"
      ]
    }
  ],
  "permissions": [
    "<all_urls>",
    "storage"
  ],
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "48": "favicon.png"
    },
    "default_title": "Simple Form History"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{71f98e7d-4f11-4f79-a4b5-b49754aa4cea}"
    }
  }
}