What next?
Getting Started: Building a Chrome Extension
Extensions allow you to add functionality to Chrome without diving deeply into native code. ...
https://developer.chrome.com/extensions/getstarted
* browser action
* Manifest File Format documentation
* browser action
* activeTab permission
* permission
* download a copy of manifest.json from our sample repository
* Download a copy of icon.png from our sample repository
* Download a copy of popup.html from our sample repository
* popup.js
* Download a copy of popup.js from our sample repository
* icon.png
* manifest.json
* popup.html
* popup.js
* Chrome Extension Overview
* debugging tutorial
* chrome.* APIs documentation
* developer's guide