Examine source code of Reddit Video Url

{
  "name": "Reddit Video Url",
  "description": "Get urls for embedded reddit videos",
  "version": "1.0.6",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*"
      ],
      "js": [
        "content-script.js",
        "scripts/sanitizer.js",
        "scripts/stretchy.js"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "48": "icons/logo48.png",
    "96": "icons/logo96.png"
  }
}