Examine source code of Cache Cleaner

{
  "manifest_version": 2,
  "name": "Cache Cleaner",
  "version": "1.1.3",
  "author": "Price Tracker",
  "description": "Clear cache with one click and browse fast. Trusted by millions.",
  "permissions": [
    "tabs",
    "activeTab",
    "browsingData",
    "http://*/",
    "https://*/"
  ],
  "icons": {
    "16": "icon/icon-16.png",
    "48": "icon/icon-48.png",
    "128": "icon/icon-128.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "browser_action": {
    "default_icon": "tab-icon.png",
    "default_title": "Clear Cache"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.amazon.com/*",
        "*://*.amazon.in/*",
        "*://*.amazon.it/*",
        "*://*.aliexpress.com/*",
        "*://*.amazon.ca/*",
        "*://*.amazon.co.uk/*",
        "*://*.amazon.de/*",
        "*://*.amazon.es/*",
        "*://*.amazon.fr/*",
        "*://*.amazon.se/*"
      ],
      "js": [
        "match.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a9662078-f373-4999-af07-9d8765417905}",
      "strict_min_version": "102.0"
    }
  }
}