At time of writing, if you replace IE with Chrome on Windows 8 then Chrome installs both a desktop and a Metro version of itself. Personally, as most of my time is spent in the desktop, I’d rather Chrome just always opened there.
There’s currently an open issue on the chromium website, but in the meantime there’s a relatively simple workaround. You just need to open up regedit, navigate to
HKEY_CLASSES_ROOT\ChromeHTML\shell\open\command
and then rename/remove the DelegateExecute entry. Then Chrome will always open in desktop mode – problem solved!