focus search box

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "focus search box",
  "version": "1.0",
  "description": "chrome extension project for focusing on search box",
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "images/icon1x.png",
      "32": "images/icon2x.png",
      "48": "images/icon3x.png",
      "128": "images/icon4x.png"
    }
  },
  "icons": {
    "16": "images/icon1x.png",
    "32": "images/icon2x.png",
    "48": "images/icon3x.png",
    "128": "images/icon4x.png"
  },
  "options_page": "options.html",
  "manifest_version": 2
}