Highlight google search result text

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Highlight google search result text",
  "description": "Search something on google, select some text below one of the result link, click the link and text you selected will be highlighted",
  "version": "0.1.3",
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "google-search.js",
        "search-result.js"
      ]
    }
  ],
  "icons": {
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "http://*/*",
    "https://*/*",
    "storage"
  ]
}