Examine source code of Window Resize

{
  "manifest_version": 2,
  "name": "Window Resize",
  "version": "1.1",
  "description": "调整浏览器窗口为预设的指定大小！",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "64": "icons/icon-64.png"
    },
    "default_title": "Window Resize",
    "default_popup": "popup/choose_size.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "windowresize@monti",
      "strict_min_version": "54.0"
    }
  }
}