Removed IllegalAccessException and UnsupportedOperationException.

tests/html/util.dart

Index: tests/html/util.dart
diff --git a/tests/html/util.dart b/tests/html/util.dart
index 22d2c74ec0919c12addce4d5d4103bb6a035ddf0..cbbe254ad582383efb746fc39928a265f7ce9795 100644
--- a/tests/html/util.dart
+++ b/tests/html/util.dart
@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 void expectUnsupported(void fn()) =>
-  Expect.throws(fn, (e) => e is UnsupportedOperationException);
+  Expect.throws(fn, (e) => e is StateError);
 
 void expectEmptyRect(ClientRect rect) {
   Expect.equals(0, rect.bottom);