Examine source code of Reload Tab

{
  "manifest_version": 2,
  "name": "Reload Tab",
  "version": "1.2resigned1",
  "description": "Reload active tab in current window",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/page-16.png",
      "32": "icons/page-32.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{690642d5-187f-449f-ab41-8ca6fcf7c1ed}"
    }
  }
}