Examine source code of Comment Viewer

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "version": "1.0.1",
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "js": [
        "scripts/content.js"
      ],
      "matches": [
        "https://*/*",
        "http://*/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ed1c9714-b4b0-4ec0-be5e-1f492d775195}"
    }
  }
}