Examine source code of Google Search Quick Open

{
  "name": "Google Search Quick Open",
  "description": "Google search result auto quick open in new tab",
  "version": "3.0.0",
  "manifest_version": 2,
  "default_locale": "en",
  "icons": {
    "16": "icon/icon-16.png",
    "32": "icon/icon-32.png",
    "64": "icon/icon-64.png",
    "128": "icon/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.google.com/search*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "commands": {
    "quick-open": {
      "description": "Quick Open",
      "suggested_key": {
        "default": "Alt+A"
      }
    }
  },
  "background": {
    "persistent": true,
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon/icon-32.png"
  },
  "permissions": [
    "tabs"
  ],
  "applications": {
    "gecko": {
      "id": "{94c68280-c1fa-4895-82b0-31d93651b10c}",
      "strict_min_version": "58.0"
    }
  }
}