Separating transitions from descriptors.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index e910a433e69eb271a2681e0dd86b4546b7a23705..4238a12d22a71276d394c6de179538b96ff1563c 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -2191,14 +2191,11 @@ void Genesis::TransferNamedProperties(Handle<JSObject> from,
           JSObject::SetNormalizedProperty(to, key, callbacks, d);
           break;
         }
-        case MAP_TRANSITION:
-        case CONSTANT_TRANSITION:
-          // Ignore non-properties.
-          break;
         case NORMAL:
           // Do not occur since the from object has fast properties.
         case HANDLER:
         case INTERCEPTOR:
+        case TRANSITION:
         case NONEXISTENT:
           // No element in instance descriptors have proxy or interceptor type.
           UNREACHABLE();