Add support for the new function-type syntax.

pkg/compiler/lib/src/elements/modelx.dart

Index: pkg/compiler/lib/src/elements/modelx.dart
diff --git a/pkg/compiler/lib/src/elements/modelx.dart b/pkg/compiler/lib/src/elements/modelx.dart
index c2d2e75ae8cc45f0d91cfc5d4ab4e79400a14816..4c850bb9c7fbffb0f9a71895f62d42dbc8f97005 100644
--- a/pkg/compiler/lib/src/elements/modelx.dart
+++ b/pkg/compiler/lib/src/elements/modelx.dart
@@ -1343,7 +1343,7 @@ class TypedefElementX extends ElementX
   TypedefType computeType(Resolution resolution) {
     if (thisTypeCache != null) return thisTypeCache;
     Typedef node = parseNode(resolution.parsingContext);
-    setThisAndRawTypes(createTypeVariables(node.typeParameters));
+    setThisAndRawTypes(createTypeVariables(node.templateParameters));
     ensureResolved(resolution);
     return thisTypeCache;
   }
@@ -1740,6 +1740,15 @@ class FormalElementX extends ElementX
       : this.identifier = identifier,
         super(identifier.source, elementKind, enclosingElement);
 
+  FormalElementX.unnamed(ElementKind elementKind,
+      FunctionTypedElement enclosingElement,
+      this.definitions)
+      : this.identifier = null,
+        super("<unnamed>", elementKind, enclosingElement);
+
+  /// Whether this is an unnamed parameter in a Function type.
+  bool get isUnnamed => identifier == null;
+
   FunctionTypedElement get functionDeclaration => enclosingElement;
 
   Modifiers get modifiers => definitions.modifiers;