Handle NewExpression in SemanticSendVisitor.

pkg/compiler/lib/src/elements/modelx.dart

Index: pkg/compiler/lib/src/elements/modelx.dart
diff --git a/pkg/compiler/lib/src/elements/modelx.dart b/pkg/compiler/lib/src/elements/modelx.dart
index 68ee1a47a71510e0749c8e2612acc893e6697db6..ed6120c62fadc81ef7e63b83feff9cad8bc1f058 100644
--- a/pkg/compiler/lib/src/elements/modelx.dart
+++ b/pkg/compiler/lib/src/elements/modelx.dart
@@ -305,6 +305,7 @@ class ErroneousElementX extends ElementX implements ErroneousElement {
   get executableContext => unsupported();
   get isExternal => unsupported();
 
+  bool get isRedirectingGenerative => unsupported();
   bool get isRedirectingFactory => unsupported();
 
   computeSignature(compiler) => unsupported();
@@ -341,6 +342,12 @@ class ErroneousConstructorElementX extends ErroneousElementX
       Element enclosing)
       : super(messageKind, messageArguments, name, enclosing);
 
+  bool get isRedirectingGenerative => false;
+
+  void set isRedirectingGenerative(_) {
+    throw new UnsupportedError("isRedirectingGenerative");
+  }
+
   bool get isRedirectingFactory => false;
 
   get definingElement {
@@ -1912,6 +1919,7 @@ class LocalFunctionElementX extends BaseFunctionElementX
 
 abstract class ConstructorElementX extends FunctionElementX
     implements ConstructorElement {
+  bool isRedirectingGenerative = false;
 
   ConstructorElementX(String name,
                       ElementKind kind,