Make methods in Stopwatch getters and rename to be more consistent.

tests/benchmark_smoke/benchmark_base.dart

 // Copyright (c) 2011, 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.
 
 /** Accessors for our Singleton variables. */
 BenchmarkSuite get BENCHMARK_SUITE {
   if (BenchmarkSuite._ONLY == null) {
     BenchmarkSuite._ONLY = new BenchmarkSuite._internal();
   }
   return BenchmarkSuite._ONLY;
@@ skipping 42 matching lines @@
    * time minimum has been reached.
    */
   static double measureFor(Function f, int timeMinimum) {
     int time = 0;
     int iter = 0;
     Stopwatch watch = new Stopwatch();
     watch.start();
     int elapsed = 0;
     while (elapsed < timeMinimum || iter < 32) {
       f();
-      elapsed = watch.elapsedInMs();
+      elapsed = watch.elapsedMilliseconds;
       iter++;
     }
     return (1000.0 * iter) / elapsed;
   }
 
   /**
    * Measures the score for the benchmark and returns it.
    * We measure iterations / sec (so bigger = better!).
    */
   double measure() {
@@ skipping 114 matching lines @@
    * helping readability of the scores.
    */
   String formatScore(num value) {
     if (value > 100) {
       return value.toStringAsFixed(0);
     } else {
       return value.toStringAsFixed(2);
     }
   }
 }