Assign external sizes to external strings and to external typed data created by the VM.

runtime/vm/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_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 7878 matching lines @@
   TYPED_GETTER_SETTER(Uint64, uint64_t)
   TYPED_GETTER_SETTER(Float32, float)
   TYPED_GETTER_SETTER(Float64, double)
   TYPED_GETTER_SETTER(Float32x4, simd128_value_t)
   TYPED_GETTER_SETTER(Int32x4, simd128_value_t)
   TYPED_GETTER_SETTER(Float64x2, simd128_value_t)
 
 #undef TYPED_GETTER_SETTER
 
   FinalizablePersistentHandle* AddFinalizer(
-      void* peer, Dart_WeakPersistentHandleFinalizer callback) const;
+      void* peer,
+      Dart_WeakPersistentHandleFinalizer callback,
+      intptr_t external_size) const;
 
   static intptr_t length_offset() {
     return OFFSET_OF(RawExternalTypedData, length_);
   }
 
   static intptr_t data_offset() {
     return OFFSET_OF(RawExternalTypedData, data_);
   }
 
   static intptr_t InstanceSize() {
@@ skipping 869 matching lines @@
 
 inline void TypeArguments::SetHash(intptr_t value) const {
   // This is only safe because we create a new Smi, which does not cause
   // heap allocation.
   StoreSmi(&raw_ptr()->hash_, Smi::New(value));
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_