Allow named parameters in const constructor invocations.

compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java

Index: compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java
diff --git a/compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java b/compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java
index 535df8804342fbcfcb816bf1a31a6e0a4937cd0d..479387d697284e9bd7fee15e7aa2a17253830612 100644
--- a/compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java
+++ b/compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java
@@ -1,4 +1,4 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
@@ -26,6 +26,7 @@ import com.google.dart.compiler.ast.DartMapLiteral;
 import com.google.dart.compiler.ast.DartMapLiteralEntry;
 import com.google.dart.compiler.ast.DartMethodDefinition;
 import com.google.dart.compiler.ast.DartMethodInvocation;
+import com.google.dart.compiler.ast.DartNamedExpression;
 import com.google.dart.compiler.ast.DartNewExpression;
 import com.google.dart.compiler.ast.DartNode;
 import com.google.dart.compiler.ast.DartNodeTraverser;
@@ -289,6 +290,11 @@ public class CompileTimeConstantAnalyzer {
     }
 
     @Override
+    public Void visitNamedExpression(DartNamedExpression node) {
+      return node.getExpression().accept(this);
+    }
+
+    @Override
     public Void visitIdentifier(DartIdentifier x) {
       x.visitChildren(this);