Examine source code of Coinbase Wallet features

{
  "manifest_version": 2,
  "name": "Coinbase Wallet",
  "version": "1.0",
  "description": "Simple Coinbase Wallet viewer and launcher.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html",
    "default_title": "Coinbase Wallet"
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0f459ea1-c1d3-4718-93aa-3110e139eddd}"
    }
  }
}