Use third party tools like XHProf instead.
Removed defunct or unnecessary debug GET parameters:
debug_profile, debug_memory, profile_trace, debug_javascript, debug_behaviour
2.4 used to use a manifest to find css. One side-effect of that is that even without explicit support,
css files in module-specific themes (/themes/{theme}_{module}/) would get picked up. This broke in 3.
This fix does still require the module name to be explicitly passed as a parameter to themedCSS, but if
you do, and a css file of that name exists in the module-specific themes css directory, that will
be included in preference to the theme or module provided css
