Big merge from experimental to bleeding edge.

tests/corelib/list_fixed_test.dart

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+main() {
+  var a;
+
+  a = new List.fixedLength(42);
+  Expect.equals(42, a.length);
+  Expect.throws(() => a.add(499), (e) => e is UnsupportedError);
+  Expect.equals(42, a.length);
+  for (int i = 0; i < 42; i++) {
+    Expect.equals(null, a[i]);
+  }
+  Expect.throws(() => a.clear(), (e) => e is UnsupportedError);
+  Expect.equals(42, a.length);
+
+  a = new List.fixedLength(42, fill: -2);
+  Expect.equals(42, a.length);
+  Expect.throws(() => a.add(499), (e) => e is UnsupportedError);
+  Expect.equals(42, a.length);
+  for (int i = 0; i < 42; i++) {
+    Expect.equals(-2, a[i]);
+  }
+  Expect.throws(() => a.clear(), (e) => e is UnsupportedError);
+  Expect.equals(42, a.length);
+}