Add support for the new function-type syntax.

pkg/compiler/lib/src/tree/prettyprint.dart

Index: pkg/compiler/lib/src/tree/prettyprint.dart
diff --git a/pkg/compiler/lib/src/tree/prettyprint.dart b/pkg/compiler/lib/src/tree/prettyprint.dart
index 6056a3d76960e6eb968ce46ddc7bd05e5efbdf96..6a9aa96a2baa2d75de201d63c21db9f6bdc08a50 100644
--- a/pkg/compiler/lib/src/tree/prettyprint.dart
+++ b/pkg/compiler/lib/src/tree/prettyprint.dart
@@ -153,6 +153,14 @@ class PrettyPrinter extends Indentation with Tagging<Node> implements Visitor {
     closeNode();
   }
 
+  visitFunctionTypeAnnotation(FunctionTypeAnnotation node) {
+    openNode(node, "FunctionTypeAnnotation");
+    visitChildNode(node.returnType, "returnType");
+    visitChildNode(node.typeParameters, "typeParameters");
+    visitChildNode(node.formals, "formals");
+    closeNode();
+  }
+
   visitIdentifier(Identifier node) {
     openAndCloseNode(node, "Identifier", {"token": node.token});
   }
@@ -244,6 +252,13 @@ class PrettyPrinter extends Indentation with Tagging<Node> implements Visitor {
     }
   }
 
+  visitNominalTypeAnnotation(NominalTypeAnnotation node) {
+    openNode(node, "NominalTypeAnnotation");
+    visitChildNode(node.typeName, "typeName");
+    visitChildNode(node.typeArguments, "typeArguments");
+    closeNode();
+  }
+
   visitOperator(Operator node) {
     openAndCloseNode(node, "Operator", {"value": node.token});
   }
@@ -345,13 +360,6 @@ class PrettyPrinter extends Indentation with Tagging<Node> implements Visitor {
     visitNodeWithChildren(node, "TryStatement");
   }
 
-  visitTypeAnnotation(TypeAnnotation node) {
-    openNode(node, "TypeAnnotation");
-    visitChildNode(node.typeName, "typeName");
-    visitChildNode(node.typeArguments, "typeArguments");
-    closeNode();
-  }
-
   visitTypedef(Typedef node) {
     visitNodeWithChildren(node, "Typedef");
   }
@@ -472,6 +480,10 @@ class PrettyPrinter extends Indentation with Tagging<Node> implements Visitor {
     unimplemented('visitNode', node: node);
   }
 
+  visitTypeAnnotation(TypeAnnotation node) {
+    unimplemented('visitNode', node: node);
+  }
+
   unimplemented(String message, {Node node}) {
     throw message;
   }