Dart2dart rename unresolved getters & Make IsCheck not be a primitive

sdk/lib/_internal/compiler/implementation/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 64 matching lines @@
       collector.tryMakeLocalPlaceholder(element, node.selector);
     }
   }
 
   visitGetterSend(Send node) {
     final element = elements[node];
     // element == null means dynamic property access.
     if (element == null) {
       collector.tryMakeMemberPlaceholder(node.selector);
     } else if (element.isErroneous) {
+      collector.makeUnresolvedPlaceholder(node);
       return;
     } else if (element.isPrefix) {
       // Node is prefix part in case of source 'lib.somesetter = 5;'
       collector.makeNullPlaceholder(node);
     } else if (Elements.isStaticOrTopLevel(element)) {
       // Unqualified or prefixed top level or static.
       collector.makeElementPlaceholder(node.selector, element);
     } else if (!element.isTopLevel) {
       if (element.isInstanceMember) {
         collector.tryMakeMemberPlaceholder(node.selector);
@@ skipping 505 matching lines @@
 
   visitBlock(Block node) {
     for (Node statement in node.statements.nodes) {
       if (statement is VariableDefinitions) {
         makeVarDeclarationTypePlaceholder(statement);
       }
     }
     node.visitChildren(this);
   }
 }