Examine source code of Sprockets Boost

{
  "manifest_version": 2,
  "name": "Sprockets Boost",
  "description": "Access MMA scores from your browser and send surveys to new participants.",
  "version": "2.0.1",
  "author": "Sprockets Development Team",
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Sprockets"
  },
  "icons": {
    "128": "icon128.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "http://localhost:5000/*",
    "https://mysentio-staging.herokuapp.com/*",
    "https://platform.sprockets.ai/*"
  ],
  "content_scripts": [
    {
      "js": [
        "browser-polyfill.js",
        "app/content.js"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "web_accessible_resources": [
    "index.html"
  ],
  "content_security_policy": "script-src 'self' 'sha256-e2U23bFQ5J6wpovEu18l0PS8wjQMOJCb76XTw+4wtF4='; object-src 'self'"
}