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

third_party/WebKit/Source/core/fileapi/FileReaderSync.cpp

 /*
  * Copyright (C) 2010 Google Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 18 matching lines @@
  */
 
 #include "core/fileapi/FileReaderSync.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/fileapi/Blob.h"
 #include "core/fileapi/FileError.h"
 #include "core/fileapi/FileReaderLoader.h"
+#include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 FileReaderSync::FileReaderSync()
 {
 }
 
-DOMArrayBuffer* FileReaderSync::readAsArrayBuffer(ExecutionContext* executionContext, Blob* blob, ExceptionState& exceptionState)
+PassRefPtr<DOMArrayBuffer> FileReaderSync::readAsArrayBuffer(ExecutionContext* executionContext, Blob* blob, ExceptionState& exceptionState)
 {
     ASSERT(blob);
 
     FileReaderLoader loader(FileReaderLoader::ReadAsArrayBuffer, nullptr);
     startLoading(executionContext, loader, *blob, exceptionState);
 
     return loader.arrayBufferResult();
 }
 
 String FileReaderSync::readAsBinaryString(ExecutionContext* executionContext, Blob* blob, ExceptionState& exceptionState)
@@ skipping 26 matching lines @@
 }
 
 void FileReaderSync::startLoading(ExecutionContext* executionContext, FileReaderLoader& loader, const Blob& blob, ExceptionState& exceptionState)
 {
     loader.start(executionContext, blob.blobDataHandle());
     if (loader.errorCode())
         FileError::throwDOMException(exceptionState, loader.errorCode());
 }
 
 } // namespace blink