Rename Timer.repeating to Timer.periodic.

runtime/lib/timer_patch.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.
 
 patch class Timer {
   /* patch */ factory Timer(Duration duration, void callback()) {
     if (_TimerFactory._factory == null) {
       throw new UnsupportedError("Timer interface not supported.");
     }
     int milliseconds = duration.inMilliseconds;
     if (milliseconds < 0) milliseconds = 0;
     return _TimerFactory._factory(milliseconds, (_) { callback(); }, false);
   }
 
-  /* patch */ factory Timer.repeating(Duration duration,
-                                      void callback(Timer timer)) {
+  /* patch */ factory Timer.periodic(Duration duration,
+                                     void callback(Timer timer)) {
     if (_TimerFactory._factory == null) {
       throw new UnsupportedError("Timer interface not supported.");
     }
     int milliseconds = duration.inMilliseconds;
     if (milliseconds < 0) milliseconds = 0;
     return _TimerFactory._factory(milliseconds, callback, true);
   }
 }
 
 typedef Timer _TimerFactoryClosure(int milliseconds,
                                    void callback(Timer timer),
                                    bool repeating);
 
 class _TimerFactory {
   static _TimerFactoryClosure _factory;
 }
 
 // TODO(ahe): Warning: this is NOT called by Dartium. Instead, it sets
 // [_TimerFactory._factory] directly.
 void _setTimerFactoryClosure(_TimerFactoryClosure closure) {
   _TimerFactory._factory = closure;
 }