Examine source code of SoundCloud Blur Remover

{
  "manifest_version": 2,
  "name": "SoundCloud Blur Remover",
  "version": "1.1",
  "description": "Removes blur classes from SoundCloud pages",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "soundcloud-blur-remover@firefox-extension",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://soundcloud.com/*",
        "*://*.soundcloud.com/*",
        "*://insights-ui.soundcloud.com/*",
        "*://*.sndcdn.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ]
}