Add support for the new function-type syntax.

pkg/compiler/lib/src/parser/listener.dart

Index: pkg/compiler/lib/src/parser/listener.dart
diff --git a/pkg/compiler/lib/src/parser/listener.dart b/pkg/compiler/lib/src/parser/listener.dart
index b33bd84d2b2d4b2c9019ad806fc37ac1c27ef8bb..993f71e2895461752bdf468fc9cf384bc65b5be5 100644
--- a/pkg/compiler/lib/src/parser/listener.dart
+++ b/pkg/compiler/lib/src/parser/listener.dart
@@ -134,6 +134,10 @@ class Listener {
 
   void endFunctionTypeAlias(Token typedefKeyword, Token endToken) {}
 
+  void beginNewFunctionTypeAlias(Token token) {}
+
+  void endNewFunctionTypeAlias(Token typedefKeyword, Token endToken) {}
+
   void beginMixinApplication(Token token) {}
 
   void endMixinApplication() {}
@@ -295,6 +299,10 @@ class Listener {
 
   void endType(Token beginToken, Token endToken) {}
 
+  void beginFunctionType(Token token) {}
+
+  void endFunctionType(Token beginToken, Token endToken) {}
+
   void beginTypeArguments(Token token) {}
 
   void endTypeArguments(int count, Token beginToken, Token endToken) {}