Support constructor invocation in analyzer2dart.

sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder_visitor.dart

Index: sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder_visitor.dart
diff --git a/sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder_visitor.dart b/sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder_visitor.dart
index 1489aa3ccf801822cf82d4612c84d7a392d1322e..d19d7d15de5b909ade1254a7f25bc42140d40243 100644
--- a/sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder_visitor.dart
+++ b/sdk/lib/_internal/compiler/implementation/cps_ir/cps_ir_builder_visitor.dart
@@ -1122,18 +1122,18 @@ class IrBuilderVisitor extends ResolvedVisitor<ir.Primitive>
   }
 
   ir.Primitive visitNewExpression(ast.NewExpression node) {
-    assert(irBuilder.isOpen);
     if (node.isConst) {
       return translateConstant(node);
     }
     FunctionElement element = elements[node.send];
     Selector selector = elements.getSelector(node.send);
-    ast.Node selectorNode = node.send.selector;
     DartType type = elements.getType(node);
-    List<ir.Primitive> args =
+    ast.Node selectorNode = node.send.selector;
+    List<ir.Definition> arguments =
         node.send.arguments.mapToList(visit, growable:false);
-    return irBuilder.continueWithExpression(
-        (k) => new ir.InvokeConstructor(type, element,selector, k, args));
+    return irBuilder.buildConstructorInvocation(
+        element, selector, type, arguments);
+
   }
 
   ir.Primitive visitStringJuxtaposition(ast.StringJuxtaposition node) {