[wasm] Avoid double-serializing the wire bytes

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 <map>
 
@@ skipping 1424 matching lines @@
   // another filler object is created so the over allocated memory is iterable.
   MUST_USE_RESULT HeapObject* AlignWithFiller(HeapObject* object,
                                               int object_size,
                                               int allocation_size,
                                               AllocationAlignment alignment);
 
   // ===========================================================================
   // ArrayBuffer tracking. =====================================================
   // ===========================================================================
 
+  // TODO(gc): API usability: encapsulate mutation of JSArrayBuffer::is_external
+  // in the registration/unregistration APIs. Consider dropping the "New" from
+  // "RegisterNewArrayBuffer" because one can re-register a previously
+  // unregistered buffer, too, and the name is confusing.
   void RegisterNewArrayBuffer(JSArrayBuffer* buffer);
   void UnregisterArrayBuffer(JSArrayBuffer* buffer);
 
   // ===========================================================================
   // Allocation site tracking. =================================================
   // ===========================================================================
 
   // Updates the AllocationSite of a given {object}. If the global prenuring
   // storage is passed as {pretenuring_feedback} the memento found count on
   // the corresponding allocation site is immediately updated and an entry
@@ skipping 1185 matching lines @@
   }
 
  private:
   Heap* heap_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_HEAP_H_