Examine source code of Speedtest.net - RCE Patch

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "__MSG_extName__",
  "short_name": "Speedtest",
  "version": "1.0.9.12",
  "manifest_version": 2,
  "default_locale": "en",
  "description": "__MSG_extDescription__",
  "icons": {
    "16": "images/gauge-16.png",
    "48": "images/gauge-48.png",
    "128": "images/gauge-128.png"
  },
  "permissions": [
    "webRequest",
    "background",
    "storage",
    "tabs"
  ],
  "background": {
    "page": "/background.html"
  },
  "options_page": "index.html?options=true",
  "browser_action": {
    "default_icon": {
      "19": "images/gauge-19.png",
      "38": "images/gauge-38.png"
    },
    "default_title": "Speedtest",
    "default_popup": "index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "webspeed.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ae8fb59d-132a-4d81-b09a-f28d7dfecf30}"
    }
  }
}