Examine source code of Video Player

{
  "manifest_version": 2,
  "version": "0.2.4",
  "name": "Video Player",
  "description": "__MSG_description__",
  "default_locale": "en",
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "icons": {
    "16": "data/icons/16.png",
    "19": "data/icons/19.png",
    "32": "data/icons/32.png",
    "38": "data/icons/38.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"
  },
  "background": {
    "scripts": [
      "/v2/chrome.contextMenus.create.js",
      "/v2/chrome.runtime.js",
      "/v2/chrome.action.js",
      "/v2/chrome.windows.create.js",
      "/v2/chrome.windows.get.js",
      "/v2/chrome.windows.getCurrent.js",
      "context.js",
      "worker.js"
    ]
  },
  "content_security_policy": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'",
  "homepage_url": "https://add0n.com/video-player.html",
  "commands": {
    "_execute_browser_action": {}
  },
  "file_handlers": [
    {
      "action": "/data/player/index.html",
      "name": "Open with MediaPlayer",
      "accept": {
        "video/avi": [
          ".avi"
        ],
        "video/mp4": [
          ".mp4"
        ],
        "video/webm": [
          ".webm"
        ],
        "video/x-flv": [
          ".flv"
        ],
        "video/quicktime": [
          ".mov"
        ],
        "video/ogg": [
          ".ogv"
        ],
        "video/3gpp": [
          ".3gp"
        ],
        "video/mpeg": [
          ".mpg"
        ],
        "video/x-ms-wmv": [
          ".wmv"
        ],
        "video/x-matroska": [
          ".mkv"
        ],
        "video/dvd": [
          ".vob"
        ]
      },
      "launch_type": "single-client"
    }
  ],
  "browser_action": {},
  "browser_specific_settings": {
    "gecko": {
      "id": "{2fba1e8e-a31a-4533-8309-5abae4990597}"
    }
  }
}