kernel->ssa: get simple constructors working

pkg/compiler/lib/src/tree/nodes.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.
 
 import 'dart:collection' show IterableMixin;
 
 import '../common.dart';
 import '../elements/elements.dart' show MetadataAnnotation;
 import '../resolution/secret_tree_element.dart'
     show NullTreeElementMixin, StoredTreeElementMixin;
@@ skipping 576 matching lines @@
  * (and should) be considered as message sends. Getters and setters
  * are just methods with a special syntax. Consequently, we model
  * property access, assignment, operators, and method calls with this
  * one node.
  */
 class Send extends Expression with StoredTreeElementMixin {
   final Node receiver;
   final Node selector;
   final NodeList argumentsNode;
 
-  /// Whether this is a conditinal send of the form `a?.b`.
+  /// Whether this is a conditional send of the form `a?.b`.
   final bool isConditional;
 
   Link<Node> get arguments => argumentsNode.nodes;
 
   Send(
       [this.receiver,
       this.selector,
       this.argumentsNode,
       this.isConditional = false]);
   Send.postfix(this.receiver, this.selector,
@@ skipping 2518 matching lines @@
 
   // VariableDefinitions.
   get metadata => null;
   get type => null;
 
   // Typedef.
   get typeParameters => null;
   get formals => null;
   get typedefKeyword => null;
 }