Track computed literal properties.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index 891f0d2302daee66039130097592cd9981b56564..eeeae161496fda85e8c5494e0dd4b47af25865f2 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -312,8 +312,11 @@ void JSObject::JSObjectVerify() {
         Representation r = descriptors->GetDetails(i).representation();
         int field = descriptors->GetFieldIndex(i);
         Object* value = RawFastPropertyAt(field);
-        if (r.IsSmi()) ASSERT(value->IsSmi());
         if (r.IsDouble()) ASSERT(value->IsHeapNumber());
+        // Ignore values set to undefined. Undefined could be the placeholder
+        // for fields that did not yet have a representation.
+        if (value->IsUndefined()) continue;
+        if (r.IsSmi()) ASSERT(value->IsSmi());
         if (r.IsHeapObject()) ASSERT(value->IsHeapObject());
       }
     }