Rename StopWatch to Stopwatch. Add new Stopwatch.start() and Stopwatch.reset().

frog/leg/compiler.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.
 
 class Compiler implements Canceler, Logger {
   final Script script;
   Queue<SourceString> worklist;
   Universe universe;
 
   List<CompilerTask> tasks;
@@ skipping 100 matching lines @@
     }
     buffer.add('main();\n');
     return buffer.toString();
   }
 
   reportWarning(Node node, String message) {}
 }
 
 class CompilerTask {
   final Compiler compiler;
-  final StopWatch watch;
+  final Stopwatch watch;
 
-  CompilerTask(this.compiler) : watch = new StopWatch();
+  CompilerTask(this.compiler) : watch = new Stopwatch();
 
   String get name() => 'Unknown task';
   int get timing() => watch.elapsedInMs();
 
   measure(Function action) {
     // TODO(kasperl): Do we have to worry about exceptions here?
     watch.start();
     var result = action();
     watch.stop();
     return result;
@@ skipping 43 matching lines @@
 final String TDIV_SUPPORT = """
 function \$tdiv(a, b) {
   var tmp = this / other;
   if (tmp < 0) {
     return Math.ceil(tmp);
   } else {
     return Math.floor(tmp);
   }
 }
 """;