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

sdk/lib/_internal/compiler/implementation/tools/mini_parser.dart

Index: sdk/lib/_internal/compiler/implementation/tools/mini_parser.dart
diff --git a/sdk/lib/_internal/compiler/implementation/tools/mini_parser.dart b/sdk/lib/_internal/compiler/implementation/tools/mini_parser.dart
index ea5677109d374b6b5de5d04a6fe6ce0d6dd87437..9f0ee082c7d337efc5eafa58119327bce2d71787 100644
--- a/sdk/lib/_internal/compiler/implementation/tools/mini_parser.dart
+++ b/sdk/lib/_internal/compiler/implementation/tools/mini_parser.dart
@@ -36,7 +36,7 @@ void toolMain(List<String> arguments) {
   MyOptions options = new MyOptions();
 
   void printStats() {
-    int kb = (charCount / 1024).round().toInt();
+    int kb = (charCount / 1024).round();
     String stats =
         '$classCount classes (${kb}Kb) in ${stopwatch.elapsedMilliseconds}ms';
     if (errorCount != 0) {