- Removed named constructor Stopwatch.start() due to conflict with instance methods start().

lib/coreimpl/stopwatch_implementation.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.
 
 /**
  * A simple implementation of the [Stopwatch] interface.
  */
 class StopwatchImplementation implements Stopwatch {
   // The _start and _stop fields capture the time when [start] and [stop]
   // are called respectively.
   // If _start is null, then the [Stopwatch] has not been started yet.
   // If _stop is null, then the [Stopwatch] has not been stopped yet,
   // or is running.
   int _start;
   int _stop;
 
   StopwatchImplementation() : _start = null, _stop = null {}
-  StopwatchImplementation.start() : _start = null, _stop = null {
-    start();
-  }
 
   void start() {
     if (_start === null) {
       // This stopwatch has never been started.
       _start = _now();
     } else {
       if (_stop === null) {
         return;
       }
       // Restarting this stopwatch. Prepend the elapsed time to the current
@@ skipping 35 matching lines @@
 
   int elapsedInMs() {
     return (elapsed() * 1000) ~/ frequency();
   }
 
   int frequency() => _frequency();
 
   external static int _frequency();
   external static int _now();
 }