Examine source code of Accelerated Speed Dial

{
  "manifest_version": 2,
  "name": "My Custom New Tab Page (Speed Dial)",
  "description": "This extension shows my custom start page when opening a new tab",
  "version": "1.0",
  "icons": {
    "16": "new_tab16.png",
    "128": "new_tab128.png"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "options_ui": {
    "page": "edit.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  }
}