Examine source code of Shopify Shop URL

{
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "amnkhan.me@gmail.com",
      "strict_min_version": "57.0"
    }
  },
  "name": "Shopify Shop URL",
  "description": "Simple extension that help you to see Shopify shop url, active theme and currency information",
  "version": "0.0.2",
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "icons": {
    "16": "icon.png",
    "128": "icon_128.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Shopify Shop URL",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "inject.js"
  ]
}