Make ~/, round, ceil, floor, truncate return ints. Remove toInt.

samples/third_party/dromaeo/Dromaeo.dart

 import 'dart:html';
 import 'dart:json' as json;
 import 'dart:math' as Math;
 import 'Suites.dart';
 
 main() {
   new Dromaeo().run();
 }
 
 class SuiteController {
@@ skipping 129 matching lines @@
   static const double _SECS_PER_TEST = 5.0;
 
   Function _createHandler() {
     int suitesLoaded = 0;
     int totalTests = 0;
     int currentSuite;
     double totalTimeSecs, estimatedTimeSecs;
 
     // TODO(jat): Remove void type below. Bug 5269037.
     void _updateTime() {
-      final mins = (estimatedTimeSecs / 60).floor().toInt();
-      final secs = (estimatedTimeSecs - mins * 60).round().toInt();
+      final mins = (estimatedTimeSecs / 60).floor();
+      final secs = (estimatedTimeSecs - mins * 60).round();
       final secsAsString = '${(secs < 10 ? "0" : "")}$secs';
       _byId('left').innerHtml = '${mins}:${secsAsString}';
 
       final elapsed = totalTimeSecs - estimatedTimeSecs;
       final percent = (100 * elapsed / totalTimeSecs).toStringAsFixed(2);
       _css(_byId('timebar'), 'width', '${percent}%');
     }
 
     Function loading, running, done;
 
@@ skipping 51 matching lines @@
   }
 
   Element _byId(String id) {
     return document.query('#$id');
   }
 
   int get _suitesTotal {
     return _suiteControllers.length;
   }
 }