const constructors with optional arguments.

tests/language/language-leg.status

 # 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.
 
 [ $component == leg && $checked ]
 *: Skip
 
 
 [ $component == leg || $component == legium ]
 AdjacentConstStringLiteralsTest: Crash # Issue 2110
@@ skipping 34 matching lines @@
 Issue4515170Test: Fail # cannot resolve VAL
 LabelTest: Fail # switch cases are not implemented
 LibraryPrefixesTest: Fail # other is not a type
 LocalFunctionTest: Fail # duplicate definition of f(var n)=> n*n-1
 ManyGenericInstanceofTest: Fail # cannot resolve type T
 MapLiteral2Test: Fail # expected a constant string
 MapLiteral4Test: Fail # map not implemented
 MethodBindingTest: Fail # Internal Error: SsaBuilder.visitIdentifier on non-this
 MethodNameTest: Fail # Parsing of pseudo keywords.
 MethodOverrideTest: Fail # cannot resolve type GetKeysFunctionType
-NamedArgumentInConstCreationTest: Fail # CompileTimeConstantEvaluator not implemented
 NamedParameters2Test: Fail # Unimplemented non-matching static call
 NamedParameters3Test: Fail # Unimplemented non-matching static call
 NamedParameters4Test: Fail # Unimplemented non-matching static call
 NamedParametersTypeTest: Fail # Internal Error: Cannot find value
 NamingTest: Fail # Internal Error: Cannot find value
 NanInfinityTest: Fail # CompileTimeConstantEvaluator not implemented
 NullToStringTest: Fail # Closurization of intercepted methods.
 NumbersTest: Fail # cannot resolve type Smi
 ParameterInitializerTest: Fail # Internal Error: SsaBuilder.visitIdentifier on non-this
 PseudoKWTest: Fail # Unexpected token '('
@@ skipping 189 matching lines @@
 
 RegExp3Test: Fail, OK # Expects exception from const constructor.
 
 
 # TODO(ahe): Categorize these failures.
 ExecuteFinally3Test: Fail
 
 
 [ $component == leg && $mode == release ]
 AssignTopMethodNegativeTest: Crash