Native context: alpha sort slots and remove boilerplate.

src/collection.js

Index: src/collection.js
diff --git a/src/collection.js b/src/collection.js
index 07d7c5c61b99c4256e2321fdaeb3ad570713fac5..4dff566049d9f01d54374c53cffd0bad93efb94a 100644
--- a/src/collection.js
+++ b/src/collection.js
@@ -503,15 +503,15 @@ function SetFromArray(array) {
 // Exports
 
 utils.ExportToRuntime(function(to) {
-  to.MapGet = MapGet;
-  to.MapSet = MapSet;
-  to.MapHas = MapHas;
-  to.MapDelete = MapDelete;
-  to.SetAdd = SetAdd;
-  to.SetHas = SetHas;
-  to.SetDelete = SetDelete;
-  to.MapFromArray = MapFromArray;
-  to.SetFromArray = SetFromArray;
+  to["map_get"] = MapGet;
+  to["map_set"] = MapSet;
+  to["map_has"] = MapHas;
+  to["map_delete"] = MapDelete;
+  to["set_add"] = SetAdd;
+  to["set_has"] = SetHas;
+  to["set_delete"] = SetDelete;
+  to["map_from_array"] = MapFromArray;
+  to["set_from_array"]= SetFromArray;
 });
 
 })