Examine source code of SwimSwam Comment Filter

{
  "manifest_version": 2,
  "name": "SwimSwam Comment Filter",
  "version": "1.1",
  "description": "Allows users to hide comments from particular usernames on SwimSwam.",
  "content_scripts": [
    {
      "matches": [
        "*://*.swimswam.com/*"
      ],
      "js": [
        "filter.js"
      ]
    }
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{27aa5407-bca7-401d-8274-f094cf4e53d9}"
    }
  }
}