Examine source code of WebEx

{
  "name": "__MSG_appName__",
  "description": "Join Webex meetings from your browser in one click. Start video calls, share your screen, and stay connected with your team during w",
  "default_locale": "en",
  "version": "5.8.0",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "32": "icon32.png",
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.webex.com/*/cwcsf-nativemsg-iframe-43c85c0d-d633-af5e-c056-32dc7efc570b.html",
        "https://*.webex.com/cwcsf-nativemsg-iframe-43c85c0d-d633-af5e-c056-32dc7efc570b.html",
        "https://*.webex.com.cn/*/cwcsf-nativemsg-iframe-43c85c0d-d633-af5e-c056-32dc7efc570b.html",
        "https://*.webex.com.cn/cwcsf-nativemsg-iframe-43c85c0d-d633-af5e-c056-32dc7efc570b.html"
      ],
      "js": [
        "CryptoJS.js",
        "content_script.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    "cwcsf-nativemsg-iframe-43c85c0d-d633-af5e-c056-32dc7efc570b.html"
  ],
  "permissions": [
    "https://*.webex.com/*",
    "https://*.webex.com.cn/*",
    "nativeMessaging",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{da4d168f-58a2-46f6-ad9c-d119f5fe3e7f}"
    }
  }
}