Added check for "unload" not being set on window if running under chrome extensions
Added check for "unload" not being set on window if running under chrome extensions

bright-sparks/enyo,beni55/enyo,airspringsoftware/enyo,enyojs/enyo,PKRoma/enyo,onecrayon/enyo,kustomzone/enyo,kustomzone/enyo,onecrayon/enyo,mcanthony/enyo,zefsolutions/enyo,beni55/enyo,wikieswan/enyo,zefsolutions/enyo,airspringsoftware/enyo,mcanthony/enyo,PKRoma/enyo,wikieswan/enyo,bright-sparks/enyo,soapdog/enyo,enyojs/enyo,soapdog/enyo