attack_self refactor (#6754)

Changes proc header

code/game/objects/structures/bedsheet_bin.dm

@@ -19,7 +19,7 @@ LINEN BINS
 	drop_sound = 'sound/items/drop/backpack.ogg'
 	pickup_sound = 'sound/items/pickup/backpack.ogg'
 
-/obj/item/bedsheet/attack_self(mob/user)
+/obj/item/bedsheet/attack_self(mob/user, datum/event_args/actor/actor)
 	. = ..()
 	if(.)
 		return

code/game/objects/structures/stool_bed_chair_nest/bed.dm

@@ -262,7 +262,7 @@
 	drop_sound = 'sound/items/drop/axe.ogg'
 	pickup_sound = 'sound/items/pickup/axe.ogg'
 
-/obj/item/roller/attack_self(mob/user)
+/obj/item/roller/attack_self(mob/user, datum/event_args/actor/actor)
 	. = ..()
 	if(.)
 		return
@@ -301,7 +301,7 @@
 	. = ..()
 	held = new /obj/item/roller(src)
 
-/obj/item/roller_holder/attack_self(mob/user)
+/obj/item/roller_holder/attack_self(mob/user, datum/event_args/actor/actor)
 	. = ..()
 	if(.)
 		return

code/game/objects/structures/stool_bed_chair_nest/wheelchair.dm

@@ -195,7 +195,7 @@
 	/// What we unfold to
 	var/unfolded_type = /obj/structure/bed/chair/wheelchair
 
-/obj/item/wheelchair/attack_self(mob/user)
+/obj/item/wheelchair/attack_self(mob/user, datum/event_args/actor/actor)
 	. = ..()
 	if(.)
 		return

code/game/objects/structures/watercloset.dm

@@ -131,7 +131,7 @@
 	reagents.add_reagent("chlorine", 3)
 	reagents.add_reagent("ammonia", 1)
 
-/obj/item/reagent_containers/food/urinalcake/attack_self(mob/user)
+/obj/item/reagent_containers/food/urinalcake/attack_self(mob/user, datum/event_args/actor/actor)
 	user.visible_message("<span class='notice'>[user] squishes [src]!</span>", "<span class='notice'>You squish [src].</span>", "<i>You hear a squish.</i>")
 	icon_state = "urinalcake_squish"
 	addtimer(VARSET_CALLBACK(src, icon_state, "urinalcake"), 8)