Update language tests to new optional parameter syntax and semantics.

tests/language/named_parameters_test.dart

Index: tests/language/named_parameters_test.dart
===================================================================
--- tests/language/named_parameters_test.dart	(revision 12414)
+++ tests/language/named_parameters_test.dart	(working copy)
@@ -2,6 +2,7 @@
 // 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.
 // Dart test program for testing named parameters.
+// VMOptions=--reject_named_argument_as_positional
 
 
 class NamedParametersTest {
@@ -64,37 +65,28 @@
     Expect.equals(20, np.f21());
     Expect.equals(20, F10(20));
     Expect.equals(20, np.f21(20));
-    Expect.equals(20, F10(b:20));
-    Expect.equals(20, np.f21(b:20));
+    Expect.equals(20, F10(b:20));  /// 01: runtime error
+    Expect.equals(20, np.f21(b:20));  /// 02: runtime error
     Expect.equals(1020, F21(10));
     Expect.equals(1020, np.f32(10));
     Expect.equals(1025, F21(10, 25));
     Expect.equals(1025, np.f32(10, 25));
-    Expect.equals(1025, F21(10, b:25));
-    Expect.equals(1025, np.f32(10, b:25));
+    Expect.equals(1025, F21(10, b:25));  /// 03: runtime error
+    Expect.equals(1025, np.f32(10, b:25));  /// 04: runtime error
     Expect.equals(102030, F31(10));
     Expect.equals(102030, np.f42(10));
     Expect.equals(102530, F31(10, 25));
     Expect.equals(102530, np.f42(10, 25));
-    Expect.equals(102530, F31(10, b:25));
-    Expect.equals(102530, np.f42(10, b:25));
-    Expect.equals(102035, F31(10, c:35));
-    Expect.equals(102035, np.f42(10, c:35));
-    Expect.equals(102535, F31(10, b:25, c:35));
-    Expect.equals(102535, np.f42(10, b:25, c:35));
-    Expect.equals(102535, F31(10, 25, c:35));
-    Expect.equals(102535, np.f42(10, 25, c:35));
-    Expect.equals(102535, F31(10, c:35, b:25));
-    Expect.equals(102535, np.f42(10, c:35, b:25));
+    Expect.equals(102035, F31(10, c:35));  /// 05: runtime error
+    Expect.equals(102035, np.f42(10, c:35));  /// 06: runtime error
+    Expect.equals(102535, F31(10, 25, 35));
+    Expect.equals(102535, np.f42(10, 25, 35));
+    Expect.equals(102535, F31(10, 25, c:35));  /// 07: runtime error
+    Expect.equals(102535, np.f42(10, 25, c:35));  /// 08: runtime error
     Expect.equals(10200040, F41(10));
     Expect.equals(10200040, np.f52(10));
-    Expect.equals(10203540, F41(10, c:35));
-    Expect.equals(10203540, np.f52(10, c:35));
-    Expect.equals(10250045, F41(10, d:45, b:25));
-    Expect.equals(10250045, F41(10, 25, d:45));
-    Expect.equals(10250045, np.f52(10, d:45, b:25));
-    Expect.equals(10253545, F41(10, d:45, c:35, b:25));
-    Expect.equals(10253545, np.f52(10, d:45, c:35, b:25));
+    Expect.equals(10203540, F41(10, c:35));  /// 09: runtime error
+    Expect.equals(10203540, np.f52(10, c:35));  /// 10: runtime error
   }
 }
 
@@ -109,7 +101,7 @@
   }
 }
 
-hello(msg, to, [from]) => '${from} sent ${msg} to ${to}';
+hello(msg, to, {from}) => '${from} sent ${msg} to ${to}';
 message() => hello("gladiolas", "possums", from: "Edna");
 
 main() {