Remove Uint8ClampedArray use from ImageBuffer.h ImageDataBuffer

Source/platform/graphics/ImageBuffer.h

 /*
  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 21 matching lines @@
 #include "platform/geometry/FloatRect.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/graphics/Canvas2DLayerBridge.h"
 #include "platform/graphics/ColorSpace.h"
 #include "platform/graphics/GraphicsTypes.h"
 #include "platform/graphics/GraphicsTypes3D.h"
 #include "platform/graphics/ImageBufferSurface.h"
 #include "platform/graphics/paint/DisplayItemList.h"
 #include "platform/transforms/AffineTransform.h"
 #include "third_party/skia/include/core/SkPaint.h"
+#include "wtf/ArrayPiece.h"

[Yuki, 2015/01/06 14:57:47]

We're going to remove wtf/ArrayBuffer.h, wtf/ArrayBufferView.h and its
subclasses.

Since wtf/ArrayPiece depends on wtf/ArrayBuffer and wtf/ArrayBufferView, we
cannot use wtf/ArrayPiece, too.

 #include "wtf/Forward.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
-#include "wtf/Uint8ClampedArray.h"
 
 namespace WTF {
 
 class ArrayBufferContents;
 
 } // namespace WTF
 
 namespace blink {
 
 class DrawingBuffer;
@@ skipping 98 matching lines @@
     friend class CrossfadeGeneratedImage;
     friend class GradientGeneratedImage;
     friend class SkiaImageFilterBuilder;
 
     OwnPtr<ImageBufferSurface> m_surface;
     OwnPtr<GraphicsContext> m_context;
     ImageBufferClient* m_client;
     OwnPtr<DisplayItemList> m_displayItemList;
 };
 
-struct ImageDataBuffer {
-    ImageDataBuffer(const IntSize& size, PassRefPtr<Uint8ClampedArray> data) : m_size(size), m_data(data) { }
-    IntSize size() const { return m_size; }
-    unsigned char* data() const { return m_data->data(); }
-
-    IntSize m_size;
-    RefPtr<Uint8ClampedArray> m_data;
+struct ImageDataBuffer : public IntSize, public ArrayPiece {
+    ImageDataBuffer(const IntSize& size, void* data) : IntSize(size), ArrayPiece(data, 0) { }
 };
 
 String PLATFORM_EXPORT ImageDataToDataURL(const ImageDataBuffer&, const String& mimeType, const double* quality);
 
 } // namespace blink
 
 #endif // ImageBuffer_h