Revert of Move DOMArrayBuffer, DOMArrayBufferViews and DataView to the heap.

third_party/WebKit/Source/modules/fetch/ReadableStreamDataConsumerHandle.cpp

 // Copyright 2015 The Chromium 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 "modules/fetch/ReadableStreamDataConsumerHandle.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScopedPersistent.h"
 #include "bindings/core/v8/ScriptFunction.h"
 #include "bindings/core/v8/ScriptState.h"
@@ skipping 240 matching lines @@
         data.GetParameter()->onCollected();
     }
 
     // |m_reader| is a weak persistent. It should be kept alive by someone
     // outside of ReadableStreamDataConsumerHandle.
     // Holding a ScopedPersistent here is safe in terms of cross-world wrapper
     // leakage because we read only Uint8Array chunks from the reader.
     ScopedPersistent<v8::Value> m_reader;
     RefPtr<ScriptState> m_scriptState;
     WebDataConsumerHandle::Client* m_client;
-    Persistent<DOMUint8Array> m_pendingBuffer;
+    RefPtr<DOMUint8Array> m_pendingBuffer;
     size_t m_pendingOffset;
     bool m_isReading;
     bool m_isDone;
     bool m_hasError;
 };
 
 ReadableStreamDataConsumerHandle::ReadableStreamDataConsumerHandle(ScriptState* scriptState, ScriptValue streamReader)
     : m_readingContext(ReadingContext::create(scriptState, streamReader))
 {
 }
 ReadableStreamDataConsumerHandle::~ReadableStreamDataConsumerHandle() = default;
 
 FetchDataConsumerHandle::Reader* ReadableStreamDataConsumerHandle::obtainReaderInternal(Client* client)
 {
     return new ReadingContext::ReaderImpl(m_readingContext, client);
 }
 
 } // namespace blink