Examine source code of highlight.js

{
  "manifest_version": 2,
  "name": "highlight.js",
  "version": "1.0.3",
  "description": "Highlight web pages with your own notes.",
  "icons": {
    "48": "icons/paperclip.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "highlight/purify.min.js",
        "highlight/highlight.js"
      ],
      "css": [
        "highlight/highlight.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "highlight/purify.min.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{dbf87ee9-e2cd-44d8-81ed-8369e491d068}"
    }
  }
}