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

samples/swarm/swarm_ui_lib/view/ConveyorView.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.
 
 part of view;
 
 /**
  * Holds a number of child views.  As you switch between views, the old
  * view is pushed off to the side and the new view slides in from the other
  * side.
@@ skipping 49 matching lines @@
     style.transitionDuration = '${durationSeconds}s';
     final xTranslationPercent = -index * 100;
     style.transform = 'translate3d(${xTranslationPercent}%, 0px, 0px)';
 
     if (animationTimeoutId != null) {
       window.clearTimeout(animationTimeoutId);
     }
 
     if (animate) {
       animationTimeoutId = window.setTimeout(
-          () { _onAnimationEnd(); }, (durationSeconds * 1000).toInt());
+          () { _onAnimationEnd(); }, (durationSeconds * 1000).truncate());
     }
     // TODO(mattsh), we should set the visibility to hide everything but the
     // selected view.
   }
 
   int getIndexOfSelectedView() {
     for (int i = 0; i < childViews.length; i++) {
       if (childViews[i] == selectedView) {
         return i;
       }
@@ skipping 10 matching lines @@
     view.transform = 'translate3d(${(childViews.length * 100)}%, 0, 0)';
     return super.addChild(view);
   }
 
   void _onAnimationEnd() {
     if (viewSelected != null) {
       viewSelected(selectedView);
     }
   }
 }