Examine source code of VSMP Tab

{
  "manifest_version": 2,
  "name": "VSMP Tab",
  "version": "1.1",
  "description": "Very slow movie played in browser tab.",
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png"
  },
  "permissions": [
    "tabs",
    "webRequest"
  ],
  "chrome_settings_overrides": {
    "homepage": "index.html"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  }
}