Removed IllegalAccessException and UnsupportedOperationException.

tests/corelib/list_removeat_test.dart

Index: tests/corelib/list_removeat_test.dart
diff --git a/tests/corelib/list_removeat_test.dart b/tests/corelib/list_removeat_test.dart
index 7010678a735d4d012fe461373c72bf373c5ed2f8..c1511c08810c17ead348b5c2d21e1ab60e212f58 100644
--- a/tests/corelib/list_removeat_test.dart
+++ b/tests/corelib/list_removeat_test.dart
@@ -45,13 +45,13 @@ void main() {
   var l2 = new List(5);
   for (var i = 0; i < 5; i++) l2[i] = i;
   Expect.throws(() { l2.removeAt(2); },
-                (e) => e is UnsupportedOperationException,
+                (e) => e is StateError,
                 "fixed-length");
 
   // Unmodifiable list.
   var l3 = const [0, 1, 2, 3, 4];
   Expect.throws(() { l3.removeAt(2); },
-                (e) => e is UnsupportedOperationException,
+                (e) => e is StateError,
                 "unmodifiable");
 
   // Empty list is not special.