Move error message makers off js builtins object.

src/js/regexp.js

Index: src/js/regexp.js
diff --git a/src/js/regexp.js b/src/js/regexp.js
index 34219d9c944e0afb752663e9708589183c782649..918450183ee0801757e489fb1ac4efcee96458ac 100644
--- a/src/js/regexp.js
+++ b/src/js/regexp.js
@@ -16,6 +16,7 @@ var FLAG_harmony_tolength;
 var FLAG_harmony_unicode_regexps;
 var GlobalRegExp = global.RegExp;
 var InternalPackedArray = utils.InternalPackedArray;
+var MakeTypeError;
 
 utils.ImportFromExperimental(function(from) {
   FLAG_harmony_regexps = from.FLAG_harmony_regexps;
@@ -23,6 +24,10 @@ utils.ImportFromExperimental(function(from) {
   FLAG_harmony_unicode_regexps = from.FLAG_harmony_unicode_regexps;
 });
 
+utils.Import(function(from) {
+  MakeTypeError = from.MakeTypeError;
+});
+
 // -------------------------------------------------------------------
 
 // Property of the builtins object for recording the result of the last