Examine source code of JS Search Extension

{
  "background": {
    "scripts": [
      "core/compat.js",
      "core/omnibox.js",
      "core/query-event.js",
      "core/command/base.js",
      "core/command/simple.js",
      "core/command/stats.js",
      "core/command/history.js",
      "core/command/manager.js",
      "index/css.js",
      "index/event.js",
      "index/html.js",
      "index/std.js",
      "command/css.js",
      "command/html.js",
      "command/event.js",
      "command/help.js",
      "search/std.js",
      "main.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "logo.png",
      "48": "logo.png",
      "128": "logo.png"
    },
    "default_popup": "popup/index.html",
    "default_title": "The ultimate search extension for Javascript!"
  },
  "content_scripts": [],
  "content_security_policy": "script-src 'self'; object-src 'self';",
  "description": "The ultimate search extension for Javascript!",
  "icons": {
    "16": "logo.png",
    "48": "logo.png",
    "128": "logo.png"
  },
  "manifest_version": 2,
  "name": "Js Search Extension",
  "omnibox": {
    "keyword": "js"
  },
  "permissions": [
    "tabs"
  ],
  "version": "0.1",
  "web_accessible_resources": []
}