Fix kernel/visitor_test

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 691e6d7149ba1535eff77457c9fcdb820dac2abc..b47936705dbcfcc5c626bf94fc614aa0446c7506 100644
--- a/pkg/compiler/lib/src/elements/modelx.dart
+++ b/pkg/compiler/lib/src/elements/modelx.dart
@@ -312,6 +312,9 @@ class ErroneousConstructorElementX extends ErroneousElementX
   bool get isRedirectingGenerative => false;
 
   @override
+  bool isRedirectingGenerativeInternal;
+
+  @override
   void set isRedirectingGenerative(_) {
     throw new UnsupportedError("isRedirectingGenerative");
   }
@@ -2222,7 +2225,7 @@ abstract class ConstantConstructorMixin implements ConstructorElement {
 abstract class ConstructorElementX extends FunctionElementX
     with ConstantConstructorMixin, ConstructorElementCommon
     implements ConstructorElement {
-  bool isRedirectingGenerative = false;
+  bool isRedirectingGenerativeInternal = false;
 
   ConstructorElementX(
       String name, ElementKind kind, Modifiers modifiers, Element enclosing)
@@ -2233,6 +2236,11 @@ abstract class ConstructorElementX extends FunctionElementX
 
   ConstructorElementX get patch => super.patch;
 
+  bool get isRedirectingGenerative {
+    if (isPatched) return patch.isRedirectingGenerative;
+    return isRedirectingGenerativeInternal;
+  }
+
   bool get isRedirectingFactory => immediateRedirectionTarget != null;
 
   // TODO(johnniwinther): This should also return true for cyclic redirecting