Change ErrorNode to masquerade as a null literal.

dart/sdk/lib/_internal/compiler/implementation/tree/nodes.dart

Index: dart/sdk/lib/_internal/compiler/implementation/tree/nodes.dart
diff --git a/dart/sdk/lib/_internal/compiler/implementation/tree/nodes.dart b/dart/sdk/lib/_internal/compiler/implementation/tree/nodes.dart
index d74f51f9c8f0fdcdc084cb4799cfb6defe656e5e..c399cb02fcb7beb7bfa02dfecc0278636d5969b1 100644
--- a/dart/sdk/lib/_internal/compiler/implementation/tree/nodes.dart
+++ b/dart/sdk/lib/_internal/compiler/implementation/tree/nodes.dart
@@ -319,14 +319,12 @@ abstract class Statement extends Node {
   bool isValidBreakTarget() => true;
 }
 
-/// Errorneous expression that behaves as a literal integer (0).
-class ErrorExpression extends LiteralInt {
+/// Errorneous expression that behaves as a literal null.
+class ErrorExpression extends LiteralNull {
   ErrorExpression(token)
-      : super(token, null);
+      : super(token);
 
   ErrorExpression asErrorExpression() => this;
-
-  int get value => 0;
 }
 
 /**