Examine source code of WallPage New Tab

{
  "name": "WallPage New Tab",
  "version": "1.0.3resigned1",
  "minimum_chrome_version": "37",
  "manifest_version": 2,
  "description": "Redesigned new tab page featuing chaing background image in a custom layout based HubbleNewTabPage.",
  "icons": {
    "16": "icon_16.png",
    "48": "icon_48.png",
    "128": "icon_128.png"
  },
  "permissions": [
    "bookmarks",
    "topSites",
    "management",
    "tabs",
    "sessions"
  ],
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "options_ui": {
    "page": "newtab.html#options",
    "chrome_style": false,
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "newtab.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ffb56c52-f90b-4cb0-a105-2e42eea81c7c}"
    }
  }
}