Examine source code of Temperature Converter

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "2.5",
  "default_locale": "en",
  "background": {
    "scripts": [
      "scripts/utils.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scripts/undo.js",
        "scripts/selection.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "browser_style": false
  },
  "permissions": [
    "menus",
    "activeTab",
    "storage",
    "<all_urls>"
  ],
  "icons": {
    "16": "icons/temp-16.png",
    "32": "icons/temp-32.png",
    "48": "icons/temp-48.png",
    "64": "icons/temp-64.png",
    "96": "icons/temp-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ffe34117-9830-44f2-a465-2d51038c7f3f}"
    }
  }
}