Change IllegalArgumentException to ArgumentError.

runtime/lib/array.dart

Index: runtime/lib/array.dart
diff --git a/runtime/lib/array.dart b/runtime/lib/array.dart
index df94b9aafc99a54fbd8a1a2d81588becbd6d249e..aa2c29ce6b3cd25e993d78a76f5a4cd09e46e1e6 100644
--- a/runtime/lib/array.dart
+++ b/runtime/lib/array.dart
@@ -31,7 +31,7 @@ class ObjectArray<E> implements List<E> {
 
   void setRange(int start, int length, List<E> from, [int startFrom = 0]) {
     if (length < 0) {
-      throw new IllegalArgumentException("negative length $length");
+      throw new ArgumentError("negative length $length");
     }
       if (from is ObjectArray) {
       _copyFromObjectArray(from, startFrom, start, length);