Migrate error messages, part 11.

src/regexp.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var $regexpExec;
 var $regexpExecNoTests;
 var $regexpLastMatchInfo;
 var $regexpLastMatchInfoOverride;
 var harmony_regexps = false;
 var harmony_unicode_regexps = false;
@@ skipping 30 matching lines @@
 // function.
 $regexpLastMatchInfoOverride = null;
 
 // -------------------------------------------------------------------
 
 // A recursive descent parser for Patterns according to the grammar of
 // ECMA-262 15.10.1, with deviations noted below.
 function DoConstructRegExp(object, pattern, flags) {
   // RegExp : Called as constructor; see ECMA-262, section 15.10.4.
   if (IS_REGEXP(pattern)) {
-    if (!IS_UNDEFINED(flags)) {
-      throw MakeTypeError('regexp_flags', []);
-    }
+    if (!IS_UNDEFINED(flags)) throw MakeTypeError(kRegExpFlags);
     flags = (pattern.global ? 'g' : '')
         + (pattern.ignoreCase ? 'i' : '')
         + (pattern.multiline ? 'm' : '');
     if (harmony_unicode_regexps)
         flags += (pattern.unicode ? 'u' : '');
     if (harmony_regexps)
         flags += (pattern.sticky ? 'y' : '');
     pattern = pattern.source;
   }
 
@@ skipping 378 matching lines @@
   %DefineAccessorPropertyUnchecked(GlobalRegExp, '$' + i,
                                    RegExpMakeCaptureGetter(i), NoOpSetter,
                                    DONT_DELETE);
 }
 %ToFastProperties(GlobalRegExp);
 
 $regexpExecNoTests = RegExpExecNoTests;
 $regexpExec = DoRegExpExec;
 
 })