Examine source code of Automatic Scroll

{
  "manifest_version": 2,
  "name": "Auto-Scroll",
  "version": "1.0.3.0",
  "description": "Scroll web pages hands-free at a speed you control. Start or pause with one button, fine-tune the pace with a slider, and jump back to the top; scrolling stops automatically at the end of the page.",
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3d4ac5f0-73ac-42a4-aaa0-d32ae5c20f46}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_title": "Auto-Scroll",
    "default_popup": "src/popup.html",
    "default_icon": {
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "64": "icons/icon-64.png"
    }
  }
}