Examine source code of Sibnet BetterPlayer

{
  "manifest_version": 2,
  "name": "__MSG_extension_name__",
  "version": "1.0.0",
  "description": "__MSG_extension_descr__",
  "default_locale": "en",
  "icons": {
    "16": "icons/16x16.png",
    "48": "icons/48x48.png",
    "128": "icons/128x128.png"
  },
  "author": "API",
  "browser_specific_settings": {
    "gecko": {
      "id": "betterplayer-sibnet@apsny.dev",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "*://*.sibnet.ru/*"
  ],
  "browser_action": {
    "default_icon": {
      "19": "icons/19x19.png",
      "38": "icons/38x38.png"
    },
    "default_title": "__MSG_extension_title__",
    "default_popup": "browseraction/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "*://video.sibnet.ru/*"
      ],
      "css": [
        "vendor/plyr.css",
        "contentscripts/content.css"
      ],
      "js": [
        "vendor/jquery.js",
        "vendor/plyr.js",
        "contentscripts/content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "vendor/*"
  ]
}