icon shows on special pages

[Google Code Exporter]

What steps will reproduce the problem?
1. go to Manage extensions: chrome://extensions/

What is the expected output? What do you see instead?
no icon in the omnibar
instead: icon in the omnibar

What version of the product are you using? On what operating system?
2.1.6 on Vista and Chrome 11.0.696.60

Please provide any additional information below.

Extensions aren't allowed to work on some pages anyway, and the plugin 
shouldn't show the icon on these pages. Anything beginning with chrome:// for 
example. (You're not the only one guilty of this — I've seen official by 
google code doing this from time to time.)

Original issue reported on code.google.com by [e-mail] on 30 Apr 2011 at 5:41