Add optional and named parameters to FunctionType.

sdk/lib/_internal/compiler/implementation/elements/modelx.dart

Index: sdk/lib/_internal/compiler/implementation/elements/modelx.dart
diff --git a/sdk/lib/_internal/compiler/implementation/elements/modelx.dart b/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
index 8fc8369a25a2596974020dcb7afd4a1d37a79759..f226e0b2c6bd30169c9385ef15db1089d9c63e4c 100644
--- a/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
+++ b/sdk/lib/_internal/compiler/implementation/elements/modelx.dart
@@ -1258,10 +1258,12 @@ class SynthesizedConstructorElementX extends FunctionElementX {
                                             Compiler compiler)
     : super(enclosing.name, ElementKind.GENERATIVE_CONSTRUCTOR,
             Modifiers.EMPTY, enclosing) {
-    type = new FunctionType(
+    type = new FunctionType(this,
         compiler.types.voidType,
         const Link<DartType>(),
-        this);
+        const Link<DartType>(),
+        const Link<SourceString>(),
+        const Link<DartType>());
     cachedNode = new FunctionExpression(
         new Identifier(enclosing.position()),
         new NodeList.empty(),