Examine source code of MediaPlayer - Videod

{
  "manifest_version": 2,
  "version": "0.2.0",
  "name": "MediaPlayer - Video and Audio Player",
  "description": "__MSG_description__",
  "default_locale": "en",
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "offline_enabled": true,
  "permissions": [
    "storage",
    "contextMenus",
    "notifications"
  ],
  "optional_permissions": [
    "activeTab",
    "*://*/*"
  ],
  "browser_action": {},
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png",
    "256": "data/icons/256.png",
    "512": "data/icons/512.png"
  },
  "commands": {
    "previous-track": {
      "description": "Previous track"
    },
    "next-track": {
      "description": "Next track"
    },
    "toggle-play": {
      "description": "Toggle play/pause"
    }
  },
  "homepage_url": "https://add0n.com/the-media-player.html",
  "browser_specific_settings": {
    "gecko": {
      "id": "{b701658c-ee49-4edb-a221-48306ed8b28c}"
    }
  }
}