Examine source code of hitomiViewerEZController

{
  "manifest_version": 2,
  "name": "hitomiViewerEZController",
  "version": "1.0",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.hitomi.la/reader/*"
      ],
      "js": [
        "hitomiViewerEZController.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9fd1b63b-5fe3-470c-9912-056cdb680a36}"
    }
  }
}