Here’s a sample:
The trouble is, with the tabs on top, the application window’s title bar height is reduced to a bare minimum, making it difficult to click on the app or move it around. Tabs on top also causes the page title to be displayed within the tab (rather than in the title bar), so we can abandon any chance of knowing the entire page title, even for those sites that set this HTML tag to some meaningful value.
And why on earth are the tab close buttons on the right?
Ahren has more comments about Chrome’s design and over all Google product design, and I left my response there too.