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

samples/clock/clock.dart

Index: samples/clock/clock.dart
diff --git a/samples/clock/clock.dart b/samples/clock/clock.dart
index ac06bc3a386bec6fc04200c5ad9f128a98c3311f..47e4f8a5e446dc4ce9b5a7c22e3af713ee6427d7 100644
--- a/samples/clock/clock.dart
+++ b/samples/clock/clock.dart
@@ -25,7 +25,7 @@ void showFps(num fps) {
   } else {
     fpsAverage = fps * 0.05 + fpsAverage * 0.95;
 
-    query("#notes").text = "${fpsAverage.round().toInt()} fps";
+    query("#notes").text = "${fpsAverage.round()} fps";
   }
 }