Examine source code of RaNDOmcASe

{
  "manifest_version": 2,
  "name": "RaNDOmcASe",
  "version": "1.0",
  "description": "Randomly capitalize letters",
  "author": "Nerd",
  "default_locale": "en",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "permissions": [
    "activeTab",
    "<all_urls>"
  ],
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6f33748d-a09b-4f79-b41b-505964325132}"
    }
  }
}