Examine source code of Play in PotPlayer

{
  "manifest_version": 2,
  "version": "0.1.1resigned1",
  "name": "Play in PotPlayer",
  "description": "Detect streamable video and audio sources and offer to play them in PotPlayer multimedia player",
  "icons": {
    "16": "data/icons/16.png",
    "18": "data/icons/18.png",
    "19": "data/icons/19.png",
    "32": "data/icons/32.png",
    "36": "data/icons/36.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"
  },
  "homepage_url": "http://add0n.com/play-in.html",
  "offline_enabled": true,
  "permissions": [
    "storage",
    "notifications",
    "nativeMessaging",
    "downloads",
    "clipboardWrite",
    "contextMenus",
    "*://*/*"
  ],
  "background": {
    "persistent": false,
    "scripts": [
      "core/webext/utils/EventEmitter.js",
      "core/webext/core/base.js",
      "core/webext/core/chrome.storage.js",
      "core/webext/core/chrome.runtime.js",
      "core/webext/core/chrome.tabs.js",
      "core/webext/core/chrome.browserAction.js",
      "core/webext/core/chrome.notifications.js",
      "core/webext/core/chrome.contextMenus.js",
      "core/background.js",
      "core/clipboard.js",
      "termlib_parser.js",
      "command.js",
      "send.js",
      "background.js"
    ]
  },
  "options_ui": {
    "page": "data/options/index.html",
    "chrome_style": true
  },
  "browser_action": {
    "default_icon": {
      "16": "data/icons/16.png",
      "18": "data/icons/18.png",
      "19": "data/icons/19.png",
      "32": "data/icons/32.png",
      "36": "data/icons/36.png",
      "38": "data/icons/38.png",
      "48": "data/icons/48.png",
      "64": "data/icons/64.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "data/inject.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0b5e9347-1495-4916-ba44-f3b367827c3f}"
    }
  }
}