Examine source code of Price Converter

{
  "manifest_version": 2,
  "name": "Price Converter",
  "version": "1.0",
  "description": "Automatically converts prices on e-commerce sites to your preferred currency.",
  "permissions": [
    "activeTab",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "*://*.ecommerce-website.com/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Price Converter"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.ecommerce-website.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "storage": {},
  "browser_specific_settings": {
    "gecko": {
      "id": "{e82a0094-317f-48e2-acf3-9553095a2a77}"
    }
  }
}