1. Write the backing data array of a GrowableObjectArray as a reference

runtime/vm/raw_object.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/atomic.h"
 #include "vm/globals.h"
@@ skipping 176 matching lines @@
 };
 
 enum TypedDataElementType {
 #define V(name) k##name##Element,
 CLASS_LIST_TYPED_DATA(V)
 #undef V
 };
 
 #define SNAPSHOT_WRITER_SUPPORT()                                              \
   void WriteTo(                                                                \
-      SnapshotWriter* writer, intptr_t object_id, Snapshot::Kind kind);        \
+      SnapshotWriter* writer, intptr_t object_id,                              \
+      Snapshot::Kind kind, bool as_reference);                                 \
   friend class SnapshotWriter;                                                 \
 
 #define VISITOR_SUPPORT(object)                                                \
   static intptr_t Visit##object##Pointers(Raw##object* raw_obj,                \
                                           ObjectPointerVisitor* visitor);
 
 #define HEAP_PROFILER_SUPPORT()                                                \
   friend class HeapProfiler;                                                   \
 
 #define RAW_OBJECT_IMPLEMENTATION(object)                                      \
@@ skipping 2032 matching lines @@
   COMPILE_ASSERT(kExternalTypedDataInt8ArrayCid ==
                  kTypedDataInt8ArrayViewCid + 15);
   COMPILE_ASSERT(kByteBufferCid == kExternalTypedDataInt8ArrayCid + 14);
   COMPILE_ASSERT(kNullCid == kByteBufferCid + 1);
   return (kNullCid - kTypedDataInt8ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_