Add AccessorInfo handling into heap profiler.

src/heap-snapshot-generator.h

Index: src/heap-snapshot-generator.h
diff --git a/src/heap-snapshot-generator.h b/src/heap-snapshot-generator.h
index 1aea5a0264df1ca142a1e35bc9d7c5b5320608d0..a0d73bfaec1188009e491cfa808de588e93a4ab6 100644
--- a/src/heap-snapshot-generator.h
+++ b/src/heap-snapshot-generator.h
@@ -378,6 +378,7 @@ class V8HeapExplorer : public HeapEntriesAllocator {
   void ExtractSharedFunctionInfoReferences(int entry,
                                            SharedFunctionInfo* shared);
   void ExtractScriptReferences(int entry, Script* script);
+  void ExtractAccessorInfoReferences(int entry, AccessorInfo* accessor_info);
   void ExtractAccessorPairReferences(int entry, AccessorPair* accessors);
   void ExtractCodeCacheReferences(int entry, CodeCache* code_cache);
   void ExtractCodeReferences(int entry, Code* code);