Examine source code of WebEx Keys

{
  "manifest_version": 2,
  "name": "WebEx Keys",
  "version": "1.2",
  "author": "SkrapeProjects",
  "homepage_url": "https://github.com/SkrapeProjects/WebEx-Keys",
  "description": "Add basic keyboard controls to WebEx's video player.",
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.webex.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ]
}