A new discovery for me - maybe others know about it -

--show-extensions-on-top command line option merges the extensions toolbar into the bookmarks toolbar. Works on Google Chrome 4.0.221.6 and maybe earlier versions.

thanks for the tip

That's cool! I guess I could finally start using toolbar extensions

Sorry, but this is old news :=) But it has first begun to work properly the last few weeks, but at least in Chromium, it has been there for over a month .. But its nice even thought.

it doesn't work in Chromium 4.0.223.2 (29372)

Great one... This gives me more screen real estate until others update their extensions to stop using the toolstrip.