Examine source code of Web Page Research

{
  "manifest_version": 2,
  "name": "Web Page Research",
  "version": "1.0",
  "description": "Search title of a web page and launch a google search about it",
  "icons": {
    "48": "icons/search.png"
  },
  "background": {
    "scripts": [
      "background.js",
      "backgroundReadServer.js"
    ]
  },
  "permissions": [
    "<all_urls>",
    "webNavigation",
    "tabs"
  ]
}