[TypeFeedbackVector] Root feedback vectors at function literal site.

test/cctest/test-feedback-vector.cc

Index: test/cctest/test-feedback-vector.cc
diff --git a/test/cctest/test-feedback-vector.cc b/test/cctest/test-feedback-vector.cc
index 927fcdb05d06f1eeebc70d965251acdfc3b06418..34ed671820284c0a3e978ae80ca81c7da32a51b2 100644
--- a/test/cctest/test-feedback-vector.cc
+++ b/test/cctest/test-feedback-vector.cc
@@ -106,8 +106,8 @@ TEST(VectorStructure) {
     CHECK_EQ(1, TypeFeedbackMetadata::GetSlotSize(
                     FeedbackVectorSlotKind::CREATE_CLOSURE));
     FeedbackVectorSlot slot = helper.slot(1);
-    FixedArray* array = FixedArray::cast(vector->Get(slot));
-    CHECK_EQ(array, *factory->empty_type_feedback_vector());
+    Cell* cell = Cell::cast(vector->Get(slot));
+    CHECK_EQ(cell->value(), *factory->undefined_value());
   }
 }