Examine source code of TinderGram

{
  "manifest_version": 2,
  "name": "TinderGram",
  "version": "1.1",
  "description": "Helps to look up the Instagram Account of Tinder chicks blazingly fast.",
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage"
  ],
  "icons": {
    "128": "icon_v3.png"
  },
  "background": {
    "scripts": [
      "index.js"
    ]
  },
  "content_security_policy": "script-src 'self' ; object-src 'self'"
}