Handle SendSet and NewExpression through NewResolvedVisitor.

pkg/compiler/lib/src/ssa/builder.dart

Index: pkg/compiler/lib/src/ssa/builder.dart
diff --git a/pkg/compiler/lib/src/ssa/builder.dart b/pkg/compiler/lib/src/ssa/builder.dart
index 58904818d0e55005fe7d326daa411b915fa5e338..05ee2a1323f7365d6b7ad37dcae4b21b196afe76 100644
--- a/pkg/compiler/lib/src/ssa/builder.dart
+++ b/pkg/compiler/lib/src/ssa/builder.dart
@@ -4778,7 +4778,8 @@ class SsaBuilder extends NewResolvedVisitor {
                               existingArguments: existingArguments);
   }
 
-  visitNewExpression(ast.NewExpression node) {
+  @override
+  handleNewExpression(ast.NewExpression node) {
     Element element = elements[node.send];
     final bool isSymbolConstructor = element == compiler.symbolConstructor;
     if (!Elements.isErroneous(element)) {
@@ -4965,7 +4966,8 @@ class SsaBuilder extends NewResolvedVisitor {
                     elements.getOperatorSelectorInComplexSendSet(node), node);
   }
 
-  visitSendSet(ast.SendSet node) {
+  @override
+  handleSendSet(ast.SendSet node) {
     generateIsDeferredLoadedCheckIfNeeded(node);
     Element element = elements[node];
     if (!Elements.isUnresolved(element) && element.impliesType) {