Examine source code of New Internet Extension

{
  "manifest_version": 2,
  "version": "1.0.0",
  "name": "New Internet Extension",
  "description": "Make sure web apps can't be evil",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16-gray.png",
      "48": "icon48-gray.png",
      "128": "icon128-gray.png"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "cookies",
    "webNavigation",
    "*://*/"
  ],
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  },
  "background": {
    "scripts": [
      "background_page.js"
    ],
    "persistent": true
  }
}