Examine source code of AutoScrollDown

{
  "manifest_version": 2,
  "name": "AutoScrollDown",
  "version": "1.0.2resigned1",
  "description": "Doing auto-scroll-down on a page",
  "icons": {
    "30": "icons/icon.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_title": "Auto-Scroll-Down",
    "default_popup": "popup/autoscrolldown.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{27725302-1ca2-4900-a46a-4c05f350b9f9}"
    }
  }
}