Handle SendSet and NewExpression through NewResolvedVisitor.

pkg/compiler/lib/src/dart_backend/placeholder_collector.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.
 
 part of dart_backend;
 
 class LocalPlaceholder {
   final String identifier;
   final Set<Node> nodes;
   LocalPlaceholder(this.identifier) : nodes = new Set<Node>();
@@ skipping 134 matching lines @@
   visitTypeLiteralSend(Send node) {
     DartType type = elements.getTypeLiteralType(node);
     if (!type.isDynamic) {
       if (type is TypeVariableType) {
         collector.makeTypeVariablePlaceholder(node.selector, type);
       } else {
         collector.makeTypePlaceholder(node.selector, type);
       }
     }
   }
+
+  @override
+  handleNewExpression(NewExpression node) => visitNode(node);
+
+  @override
+  handleSendSet(SendSet node) => visitNode(node);
 }
 
 class PlaceholderCollector extends Visitor {
   final DiagnosticListener listener;
   final MirrorRenamer mirrorRenamer;
   final FunctionElement mainFunction;
   final Set<String> fixedMemberNames; // member names which cannot be renamed.
   final Map<Element, ElementAst> elementAsts;
   final Set<Node> prefixNodesToErase = new Set<Node>();
   final Set<Node> unresolvedNodes = new Set<Node>();
@@ skipping 535 matching lines @@
 
   visitBlock(Block node) {
     for (Node statement in node.statements.nodes) {
       if (statement is VariableDefinitions) {
         makeVarDeclarationTypePlaceholder(statement);
       }
     }
     node.visitChildren(this);
   }
 }