Unify parsing of constructor references.

dart/lib/compiler/implementation/tree/nodes.dart

 // 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.
 
 abstract class Visitor<R> {
   const Visitor();
 
   abstract R visitNode(Node node);
 
   R visitBlock(Block node) => visitStatement(node);
@@ skipping 320 matching lines @@
       return argumentsNode.getEndToken();
     }
     if (selector != null) return selector.getEndToken();
     return receiver.getBeginToken();
   }
 
   Send copyWithReceiver(Node newReceiver) {
     assert(receiver == null);
     return new Send(newReceiver, selector, argumentsNode);
   }
-
-  /**
-   * Returns the type annotation of a connstructor call in an object
-   * instantiation.
-   */
-  TypeAnnotation getTypeAnnotation() {
-    if (selector is TypeAnnotation) {
-      return selector;
-    } else if (selector is Send) {
-      Send selectorSend = selector;
-      if (selectorSend.receiver is TypeAnnotation) {
-        return selectorSend.receiver;
-      }
-    }
-    return null;
-  }
 }
 
 class Postfix extends NodeList {
   Postfix() : super(null, const Link<Node>());
   Postfix.singleton(Node argument) : super.singleton(argument);
 }
 
 class Prefix extends NodeList {
   Prefix() : super(null, const Link<Node>());
   Prefix.singleton(Node argument) : super.singleton(argument);
@@ skipping 1650 matching lines @@
  * argument).
  *
  * TODO(ahe): This method is controversial, the team needs to discuss
  * if top-level methods are acceptable and what naming conventions to
  * use.
  */
 initializerDo(Node node, f(Node node)) {
   SendSet send = node.asSendSet();
   if (send != null) return f(send.arguments.head);
 }