[base] Template MatchFun in TemplateHashMapImpl

src/address-map.h

Index: src/address-map.h
diff --git a/src/address-map.h b/src/address-map.h
index 0ce93d24e898fb69eeab3541b47b7971343e5c51..95e9cb064b34af0dd36b75a33dc6b481ff120b50 100644
--- a/src/address-map.h
+++ b/src/address-map.h
@@ -189,9 +189,7 @@ class SerializerReference {
 class SerializerReferenceMap : public AddressMapBase {
  public:
   SerializerReferenceMap()
-      : no_allocation_(),
-        map_(base::HashMap::PointersMatch),
-        attached_reference_index_(0) {}
+      : no_allocation_(), map_(), attached_reference_index_(0) {}
 
   SerializerReference Lookup(HeapObject* obj) {
     base::HashMap::Entry* entry = LookupEntry(&map_, obj, false);