Remove deprecated string features.

utils/tests/string_encoding/benchmark_runner.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.
 
 /**
  * The results of a single block of tests (count times run, overall time).
  */
 class BlockSample {
   BlockSample(this.count, this.durationNanos);
   int count;
@@ skipping 71 matching lines @@
       return ((fullBlocks * blocksize) + extraReps).toInt();
     }
   }
 }
 
 /**
  * Report overall test performance
  */
 class TestReport {
   TestReport(this.id, this.desc, this.warmup, this.results) {
-    spaceChar = " ".charCodes[0];
+    spaceChar = " ".codeUnits[0];
   }
 
   int spaceChar;
 
   int resultsCount() => BlockSample._totalCount(results);
 
   int resultsNanos() => BlockSample._totalTime(results);
 
   int resultsBestNanos() {
     BlockSample best = bestBlock(results);
@@ skipping 58 matching lines @@
     String mbPerSec = (((1E9 * sizeBytes * resultsCount()) /
        (1024 * 1024 * resultsNanos()))).toString();
     print("${text} total time:${totalDurationMs} ms" +
         "    iterations:${totalCount}" +
         "    mean:${meanDuration} ns;   ${mbPerSec} MB/sec");
   }
 
   String _leftAlign(String s, int width) {
     List<int> outCodes = [];
     outCodes.insertRange(0, width, spaceChar);
-    outCodes.setRange(0, Math.min(width, s.length), s.charCodes);
+    outCodes.setRange(0, Math.min(width, s.length), s.codeUnits);
     return new String.fromCharCodes(outCodes);
   }
 
   String _rightAlign(String s, int width) {
     List<int> outCodes = [];
     outCodes.insertRange(0, width, spaceChar);
     outCodes.setRange(Math.max(0, width - s.length), Math.min(width, s.length),
-        s.charCodes);
+        s.codeUnits);
     return new String.fromCharCodes(outCodes);
   }
 
   static String _stringifyDoubleAsInt(double val) {
     if (val.isInfinite || val.isNaN) {
       return "NaN";
     } else {
       return val.toInt().toString();
     }
   }
@@ skipping 259 matching lines @@
         _(TestReport r) => r.printReport() : reportHandler;
   }
 
   Function _reportHandler;
   Function get reportHandler => _reportHandler;
   int _warmup;
   int _targetTimeMs;
   int _minSampleTimeMs;
   int _blocksize;
 }