Handle SendSet and NewExpression through NewResolvedVisitor.

pkg/compiler/lib/src/resolution/send_structure.dart

Index: pkg/compiler/lib/src/resolution/send_structure.dart
diff --git a/pkg/compiler/lib/src/resolution/send_structure.dart b/pkg/compiler/lib/src/resolution/send_structure.dart
index 9fa6416d489f991c4219221681cb021a779b958e..04ec01469b9cd6c863328310f76d5e000c919cd0 100644
--- a/pkg/compiler/lib/src/resolution/send_structure.dart
+++ b/pkg/compiler/lib/src/resolution/send_structure.dart
@@ -14,11 +14,18 @@ import '../tree/tree.dart';
 import '../universe/universe.dart';
 import '../util/util.dart';
 
+/// Interface for the structure of the semantics of a [Send] or [NewExpression]
+/// node.
+abstract class SemanticSendStructure<R, A> {
+  /// Calls the matching visit method on [visitor] with [node] and [arg].
+  R dispatch(SemanticSendVisitor<R, A> visitor, Node node, A arg);
+}
+
 /// Interface for the structure of the semantics of a [Send] node.
 ///
 /// Subclasses handle each of the [Send] variations; `assert(e)`, `a && b`,
 /// `a.b`, `a.b(c)`, etc.
-abstract class SendStructure<R, A> {
+abstract class SendStructure<R, A> extends SemanticSendStructure<R, A> {
   /// Calls the matching visit method on [visitor] with [send] and [arg].
   R dispatch(SemanticSendVisitor<R, A> visitor, Send send, A arg);
 }
@@ -1811,7 +1818,7 @@ class PostfixStructure<R, A> implements SendStructure<R, A> {
 }
 
 /// The structure for a [NewExpression] of a new invocation.
-abstract class NewStructure<R, A> {
+abstract class NewStructure<R, A> implements SemanticSendStructure<R, A> {
   /// Calls the matching visit method on [visitor] with [node] and [arg].
   R dispatch(SemanticSendVisitor<R, A> visitor, NewExpression node, A arg);
 }