Number of open tabs

[GoogleCodeExporter]

Hi, it would be great if the count of currently open tabs could be displayed on 
the extension icon next to the omnibar. You can do that very easily with 
browserAction.setBadgeText() [1]. You can also look at 
browserAction.setBadgeBackgroundColor() if necessary [2]. 

[1] 
http://developer.chrome.com/extensions/browserAction.html#method-setBadgeText
[2] 
http://developer.chrome.com/extensions/browserAction.html#method-setBadgeBackgro
undColor

Original issue reported on code.google.com by a...@google.com on 6 Jun 2013 at 1:08