Renaming IndexOutOfRangeException to RangeError.

lib/coreimpl/arrays.dart

Index: lib/coreimpl/arrays.dart
diff --git a/lib/coreimpl/arrays.dart b/lib/coreimpl/arrays.dart
index 2a43a9555588a7647cfff4766e9fa85438cb664f..0ff61b75b297013c47e880ce86de2e99eb4fea30 100644
--- a/lib/coreimpl/arrays.dart
+++ b/lib/coreimpl/arrays.dart
@@ -82,11 +82,11 @@ class Arrays {
     }
     if (start < 0 ) {
       String message = "$start must be greater than or equal to 0";
-      throw new IndexOutOfRangeException(message);
+      throw new RangeError(message);
     }
     if (start + length > a.length) {
       String message = "$start + $length must be in the range [0..${a.length})";
-      throw new IndexOutOfRangeException(message);
+      throw new RangeError(message);
     }
   }
 }