[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 c52896da94a3867db93b066f2c17961ce4448f88..d242161a6b8ba4e61617ab6986039238c0db6189 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());
   }
 }