Examine source code of Search Amazon UK Site

{
  "manifest_version": 2,
  "name": "search Amazon UK",
  "description": "The search widget allows you to integrate a search box on your mobile or desktop browser. And to search the selected text on Amazon UK",
  "version": "0.1.3",
  "icons": {
    "48": "icons/star.png",
    "64": "icons/logo.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "contextMenus"
  ],
  "page_action": {
    "default_icon": "icons/logo.png",
    "browser_style": true
  },
  "browser_action": {
    "default_icon": "icons/icon-32.png"
  }
}