Examine source code of Google Analytics Opt-Out

{
  "manifest_version": 2,
  "author": "Vishwas R",
  "name": "Google Analyics Opt-Out",
  "description": "Blocks Google Analytics from all the sites you visit.",
  "version": "1.2",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "script.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ]
}