Reland "Remove the weak list of array buffers"

src/heap-snapshot-generator.cc

 // Copyright 2013 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.
 
 #include "src/v8.h"
 
 #include "src/heap-snapshot-generator-inl.h"
 
 #include "src/allocation-tracker.h"
 #include "src/code-stubs.h"
@@ skipping 1548 matching lines @@
         HeapEntry::kNative, "system / JSArrayBufferData", size_);
   }
  private:
   size_t size_;
   V8HeapExplorer* explorer_;
 };
 
 
 void V8HeapExplorer::ExtractJSArrayBufferReferences(
     int entry, JSArrayBuffer* buffer) {
-  SetWeakReference(buffer, entry, "weak_next", buffer->weak_next(),
-                   JSArrayBuffer::kWeakNextOffset);
   // Setup a reference to a native memory backing_store object.
   if (!buffer->backing_store())
     return;
   size_t data_size = NumberToSize(heap_->isolate(), buffer->byte_length());
   JSArrayBufferDataEntryAllocator allocator(data_size, this);
   HeapEntry* data_entry =
       filler_->FindOrAddEntry(buffer->backing_store(), &allocator);
   filler_->SetNamedReference(HeapGraphEdge::kInternal,
                              entry, "backing_store", data_entry);
 }
@@ skipping 1581 matching lines @@
   writer_->AddString("\"<dummy>\"");
   for (int i = 1; i < sorted_strings.length(); ++i) {
     writer_->AddCharacter(',');
     SerializeString(sorted_strings[i]);
     if (writer_->aborted()) return;
   }
 }
 
 
 } }  // namespace v8::internal