chameleon_node in themes/chameleon/chameleon.theme
chameleon_page in themes/chameleon/chameleon.theme
template_preprocess_comment in modules/comment/comment.module
Process variables for comment.tpl.php.
template_preprocess_maintenance_page in includes/theme.maintenance.inc
The variables generated here is a mirror of template_preprocess_page(). This preprocessor will run it's course when theme_maintenance_page() is invoked. It is also used in theme_install_page() and theme_update_page() to keep all the variables…
template_preprocess_node in includes/theme.inc
Process variables for node.tpl.php
template_preprocess_page in includes/theme.inc
Process variables for page.tpl.php