WC_Cache_Helper::delete_version_transients()
Method: When the transient version increases, this is used to remove all past transients to avoid filling the DB.
Source: includes/class-wc-cache-helper.php:319
wc_sanitize_tooltip()
Function: Sanitize a string destined to be a tooltip.
Source: includes/wc-formatting-functions.php:430
wc_send_frame_options_header()
Function: When loading sensitive checkout or account pages, send a HTTP header to limit rendering of pages to same origin iframes for security reasons.
Source: includes/wc-template-functions.php:86