Examine source code of Faceit Predictor

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    {
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        "*://*.faceit.com/*"
      ],
      "js": [
        "content.js"
      ],
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        "styles.css"
      ]
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  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "faceit-predictor@blalex.ru",
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        ]
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  "icons": {
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    "48": "logo.png",
    "128": "logo.png"
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      "16": "logo.png",
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