Examine source code of Youtube Video Title

{
  "manifest_version": 2,
  "name": "Youtube video title",
  "description": "Detects the links to youtube videos on the current page, then automatically replaces it with target video's title.",
  "version": "1.0",
  "browser_action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "god.js"
      ]
    }
  ]
}