Continued deletion of frog.

lib/utf/utf_core.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * Provide a list of Unicode codepoints for a given string.
  */
 List<int> stringToCodepoints(String str) {
   List<int> codepoints;
-  // TODO _is16BitCodeUnit() is used to work around a bug with frog/dartc
+  // TODO _is16BitCodeUnit() is used to work around a bug with dart2js
   // (http://code.google.com/p/dart/issues/detail?id=1357). Consider
   // removing after this issue is resolved.
   if (_is16BitCodeUnit()) {
     codepoints = _utf16CodeUnitsToCodepoints(str.charCodes());
   } else {
     codepoints = str.charCodes();
   }
   return codepoints;
 }
 
 /**
  * Generate a string from the provided Unicode codepoints.
  */
 String codepointsToString(List<int> codepoints) {
-  // TODO _is16BitCodeUnit() is used to work around a bug with frog/dartc
+  // TODO _is16BitCodeUnit() is used to work around a bug with dart2js
   // (http://code.google.com/p/dart/issues/detail?id=1357). Consider
   // removing after this issue is resolved.
   if (_is16BitCodeUnit()) {
     return new String.fromCharCodes(
         _codepointsToUtf16CodeUnits(codepoints));
   } else {
     return new String.fromCharCodes(codepoints);
   }
 }
 
 /*
  * Test for presence of bug related to the use of UTF-16 code units for
  * Dart compiled to JS.
  */
 bool _test16BitCodeUnit = null;
-// TODO _is16BitCodeUnit() is used to work around a bug with frog/dartc
+// TODO _is16BitCodeUnit() is used to work around a bug with dart2js
 // (http://code.google.com/p/dart/issues/detail?id=1357). Consider
 // removing after this issue is resolved.
 bool _is16BitCodeUnit() {
   if (_test16BitCodeUnit == null) {
     _test16BitCodeUnit = (new String.fromCharCodes([0x1D11E])) ==
         (new String.fromCharCodes([0xD11E]));
   }
   return _test16BitCodeUnit;
 }
 
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   int get remaining() => _end - _offset;
 
   void skip([int count = 1]) {
     _offset += count;
   }
 }