Simplify feedback vector creation and store in SharedFunctionInfo.

src/heap-snapshot-generator.cc

Index: src/heap-snapshot-generator.cc
diff --git a/src/heap-snapshot-generator.cc b/src/heap-snapshot-generator.cc
index cb04f621f85526996eee608bc72c5a1183293acf..7c3becc779d0d36e3bc35988214c787bc5647890 100644
--- a/src/heap-snapshot-generator.cc
+++ b/src/heap-snapshot-generator.cc
@@ -1422,6 +1422,9 @@ void V8HeapExplorer::ExtractSharedFunctionInfoReferences(
   SetInternalReference(obj, entry,
                        "optimized_code_map", shared->optimized_code_map(),
                        SharedFunctionInfo::kOptimizedCodeMapOffset);
+  SetInternalReference(obj, entry,
+                       "feedback_vector", shared->feedback_vector(),
+                       SharedFunctionInfo::kFeedbackVectorOffset);
   SetWeakReference(obj, entry,
                    "initial_map", shared->initial_map(),
                    SharedFunctionInfo::kInitialMapOffset);