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

third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h

 // 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 "core/CoreExport.h"
 #include "core/dom/DOMTypedArray.h"
 #include "core/fileapi/BlobCallback.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/heap/Handle.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class PNGImageEncoderState;
 class JPEGImageEncoderState;
 
-class CORE_EXPORT CanvasAsyncBlobCreator : public GarbageCollectedFinalized<CanvasAsyncBlobCreator> {
+class CORE_EXPORT CanvasAsyncBlobCreator
+    : public RefCounted<CanvasAsyncBlobCreator> {
 public:
-    static CanvasAsyncBlobCreator* create(DOMUint8ClampedArray* unpremultipliedRGBAImageData, const String& mimeType, const IntSize&, BlobCallback*);
+    static PassRefPtr<CanvasAsyncBlobCreator> create(PassRefPtr<DOMUint8ClampedArray> unpremultipliedRGBAImageData, const String& mimeType, const IntSize&, BlobCallback*);
     void scheduleAsyncBlobCreation(bool canUseIdlePeriodScheduling, double quality = 0.0);
     virtual ~CanvasAsyncBlobCreator();
 
-    DEFINE_INLINE_VIRTUAL_TRACE()
-    {
-        visitor->trace(m_data);
-    }
-
 private:
-    CanvasAsyncBlobCreator(DOMUint8ClampedArray* data, const String& mimeType, const IntSize&, BlobCallback*);
+    CanvasAsyncBlobCreator(PassRefPtr<DOMUint8ClampedArray> data, const String& mimeType, const IntSize&, BlobCallback*);
     void scheduleCreateBlobAndCallOnMainThread();
     void scheduleCreateNullptrAndCallOnMainThread();
 
     OwnPtr<PNGImageEncoderState> m_pngEncoderState;
     OwnPtr<JPEGImageEncoderState> m_jpegEncoderState;
-    Member<DOMUint8ClampedArray> m_data;
+    RefPtr<DOMUint8ClampedArray> m_data;
     OwnPtr<Vector<unsigned char>> m_encodedImage;
     int m_numRowsCompleted;
 
     const IntSize m_size;
     size_t m_pixelRowStride;
     const String m_mimeType;
     CrossThreadPersistent<BlobCallback> m_callback;
 
-    SelfKeepAlive<CanvasAsyncBlobCreator> m_keepAlive;
+    RefPtr<CanvasAsyncBlobCreator> m_selfRef;
     void clearSelfReference();
 
     void initiatePngEncoding(double deadlineSeconds);
     void scheduleIdleEncodeRowsPng();
     void idleEncodeRowsPng(double deadlineSeconds);
 
     void initiateJpegEncoding(const double& quality);
 
     void createBlobAndCall();
 
     void encodeImageOnEncoderThread(double quality);
 };
 
 } // namespace blink