Examine source code of Video/Audio Resume

{
  "manifest_version": 2,
  "name": "Media Resume",
  "version": "0.1.4resigned1",
  "description": "Allows you to save the position you are in, in one video or audio player.",
  "icons": {
    "48": "icons/mediaResume-48.png",
    "96": "icons/mediaResume-96.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/mediaResume-16.png",
      "32": "icons/mediaResume-32.png"
    },
    "default_title": "Media Resume"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "main.js"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6b9506f5-dd4a-42d1-a7ce-641332ec9dfa}"
    }
  }
}