Serialize all external strings except for native source code strings.

src/heap/heap.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_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 
 #include "src/allocation.h"
@@ skipping 65 matching lines @@
   V(Map, string_map, StringMap)                                                \
   V(Map, one_byte_string_map, OneByteStringMap)                                \
   V(Map, cons_string_map, ConsStringMap)                                       \
   V(Map, cons_one_byte_string_map, ConsOneByteStringMap)                       \
   V(Map, sliced_string_map, SlicedStringMap)                                   \
   V(Map, sliced_one_byte_string_map, SlicedOneByteStringMap)                   \
   V(Map, external_string_map, ExternalStringMap)                               \
   V(Map, external_string_with_one_byte_data_map,                               \
     ExternalStringWithOneByteDataMap)                                          \
   V(Map, external_one_byte_string_map, ExternalOneByteStringMap)               \
+  V(Map, native_source_string_map, NativeSourceStringMap)                      \
   V(Map, short_external_string_map, ShortExternalStringMap)                    \
   V(Map, short_external_string_with_one_byte_data_map,                         \
     ShortExternalStringWithOneByteDataMap)                                     \
   V(Map, internalized_string_map, InternalizedStringMap)                       \
   V(Map, one_byte_internalized_string_map, OneByteInternalizedStringMap)       \
   V(Map, external_internalized_string_map, ExternalInternalizedStringMap)      \
   V(Map, external_internalized_string_with_one_byte_data_map,                  \
     ExternalInternalizedStringWithOneByteDataMap)                              \
   V(Map, external_one_byte_internalized_string_map,                            \
     ExternalOneByteInternalizedStringMap)                                      \
@@ skipping 2410 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_H_