Added new version of reduce.

pkg/stack_trace/lib/src/trace.dart

 // Copyright (c) 2013, 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.
 
 library trace;
 
 import 'dart:uri';
+import 'dart:math';

[nweiz, 2013/04/12 19:47:33]

Please import dart:math with a prefix. It has a lot of top-level members that
can conflict easily. Same goes for utils/tests/pub/command_line_config.dart.

[floitsch, 2013/04/13 13:15:51]

done in https://codereview.chromium.org/14111004

 
 import 'frame.dart';
 
 final _patchRegExp = new RegExp(r"-patch$");
 
 /// A stack trace, comprised of a list of stack frames.
 class Trace implements StackTrace {
   // TODO(nweiz): make this read-only once issue 8321 is fixed.
   /// The stack frames that comprise this stack trace.
   final List<Frame> frames;
@@ skipping 91 matching lines @@
     }
 
     return new Trace(newFrames.reversed);
   }
 
   /// Returns a human-readable string representation of [this].
   String toString() {
     if (frames.length == '') return '';
 
     // Figure out the longest path so we know how much to pad.
-    var longest = frames.map((frame) => frame.location.length).max();
+    var longest = frames.map((frame) => frame.location.length).reduce(max);
 
     // Print out the stack trace nicely formatted.
     return frames.map((frame) {
       return '${_padRight(frame.location, longest)}  ${frame.member}\n';
     }).join();
   }
 }
 
 /// Returns [string] with enough spaces added to the end to make it [length]
 /// characters long.
 String _padRight(String string, int length) {
   if (string.length >= length) return string;
 
   var result = new StringBuffer();
   result.write(string);
   for (var i = 0; i < length - string.length; i++) {
     result.write(' ');
   }
 
   return result.toString();
 }