Examine source code of EZ Codes

{
  "manifest_version": 2,
  "name": "EZ Codes",
  "version": "1.6",
  "permissions": [
    "activeTab",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "storage",
    "https://my.ticketmaster.com/*",
    "https://am.ticketmaster.com/*",
    "https://api.zerohero.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://my.ticketmaster.com/order/*",
        "https://am.ticketmaster.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon/icon.png"
  },
  "icons": {
    "128": "icon/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2bd345ab-c645-413a-851a-70ba0c5a183d}"
    }
  }
}