Examine source code of lyricopy

{
  "manifest_version": 2,
  "name": "lyricopy",
  "version": "1.0",
  "description": "let users just copy the search result of lyrics",
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "include_globs": [
        "https://www.google.*/search*"
      ],
      "css": [
        "style.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{de6fd8f0-fdf7-45ab-b47d-4d3d9e1016bf}"
    }
  }
}