Examine source code of Reset Tab

{
  "manifest_version": 2,
  "name": "Reset Tab",
  "version": "1.3",
  "description": "Closes the current tab, reopens it to clear its history, resets its position and pin status. Click the extension icon or use shortcut: Alt+R",
  "permissions": [
    "tabs",
    "theme"
  ],
  "browser_action": {
    "default_icon": {
      "128": "icon.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "commands": {
    "resetTab": {
      "suggested_key": {
        "default": "Alt+R"
      },
      "description": "Reset Tab"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1778be93-34d1-4978-8d0a-5d66753d21b9}"
    }
  }
}