Fix serialization statistics for external strings.

src/snapshot/serialize.h

 // Copyright 2012 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_SERIALIZE_H_
 #define V8_SERIALIZE_H_
 
 #include "src/hashmap.h"
 #include "src/heap-profiler.h"
 #include "src/isolate.h"
@@ skipping 600 matching lines @@
   void VisitPointers(Object** start, Object** end) OVERRIDE;
 
   void EncodeReservations(List<SerializedData::Reservation>* out) const;
 
   Isolate* isolate() const { return isolate_; }
 
   BackReferenceMap* back_reference_map() { return &back_reference_map_; }
   RootIndexMap* root_index_map() { return &root_index_map_; }
 
 #ifdef OBJECT_PRINT
-  void CountInstanceType(HeapObject* obj);
+  void CountInstanceType(Map* map, int size);
 #endif  // OBJECT_PRINT
 
  protected:
   class ObjectSerializer : public ObjectVisitor {
    public:
     ObjectSerializer(Serializer* serializer, Object* o, SnapshotByteSink* sink,
                      HowToCode how_to_code, WhereToPoint where_to_point)
         : serializer_(serializer),
           object_(HeapObject::cast(o)),
           sink_(sink),
@@ skipping 363 matching lines @@
       kNumInternalizedStringsOffset + kInt32Size;
   static const int kNumCodeStubKeysOffset = kNumReservationsOffset + kInt32Size;
   static const int kPayloadLengthOffset = kNumCodeStubKeysOffset + kInt32Size;
   static const int kChecksum1Offset = kPayloadLengthOffset + kInt32Size;
   static const int kChecksum2Offset = kChecksum1Offset + kInt32Size;
   static const int kHeaderSize = kChecksum2Offset + kInt32Size;
 };
 } }  // namespace v8::internal
 
 #endif  // V8_SERIALIZE_H_