[base] Template MatchFun in TemplateHashMapImpl

src/snapshot/startup-serializer.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_SNAPSHOT_STARTUP_SERIALIZER_H_
 #define V8_SNAPSHOT_STARTUP_SERIALIZER_H_
 
 #include <bitset>
 #include "include/v8.h"
 #include "src/snapshot/serializer.h"
@@ skipping 14 matching lines @@
   // 3) Partial snapshot cache.
   // 4) Weak references (e.g. the string table).
   void SerializeStrongReferences();
   void SerializeWeakReferencesAndDeferred();
 
   int PartialSnapshotCacheIndex(HeapObject* o);
 
  private:
   class PartialCacheIndexMap : public AddressMapBase {
    public:
-    PartialCacheIndexMap()
-        : map_(base::HashMap::PointersMatch), next_index_(0) {}
+    PartialCacheIndexMap() : map_(), next_index_(0) {}
 
     // Lookup object in the map. Return its index if found, or create
     // a new entry with new_index as value, and return kInvalidIndex.
     bool LookupOrInsert(HeapObject* obj, int* index_out) {
       base::HashMap::Entry* entry = LookupEntry(&map_, obj, false);
       if (entry != NULL) {
         *index_out = GetValue(entry);
         return true;
       }
       *index_out = next_index_;
@@ skipping 26 matching lines @@
   bool serializing_immortal_immovables_roots_;
   std::bitset<Heap::kStrongRootListLength> root_has_been_serialized_;
   PartialCacheIndexMap partial_cache_index_map_;
   DISALLOW_COPY_AND_ASSIGN(StartupSerializer);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_SNAPSHOT_STARTUP_SERIALIZER_H_