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

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

Index: third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h
diff --git a/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h b/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h
index cae95f3253fa94900a35d387f4a8dcfa635f3e14..391a9ce9a387789b3fe74163480054a777b39a63 100644
--- a/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h
+++ b/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h
@@ -17,25 +17,21 @@
 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;
 
@@ -44,7 +40,7 @@
     const String m_mimeType;
     CrossThreadPersistent<BlobCallback> m_callback;
 
-    SelfKeepAlive<CanvasAsyncBlobCreator> m_keepAlive;
+    RefPtr<CanvasAsyncBlobCreator> m_selfRef;
     void clearSelfReference();
 
     void initiatePngEncoding(double deadlineSeconds);