Examine source code of Simple Window Saver

{
  "id": "simple-window-saver",
  "name": "Simple Window Saver",
  "version": "1.6",
  "description": "Save and restore windows.",
  "manifest_version": 2,
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "icon19.png",
      "38": "icon38.png"
    },
    "default_title": "Simple Window Saver",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "localStorage.js",
      "eventHandlers.js",
      "badge.js",
      "background.js"
    ]
  },
  "permissions": [
    "tabs",
    "cookies"
  ]
}