Remove Uint8ClampedArray use from ImageBuffer.h ImageDataBuffer

Source/platform/graphics/ImageBuffer.h

Index: Source/platform/graphics/ImageBuffer.h
diff --git a/Source/platform/graphics/ImageBuffer.h b/Source/platform/graphics/ImageBuffer.h
index 9ee4f0aadbcfbb7e1571e1d534b1f1bfd0415a06..02aa7637d4a0133fcfdf21ba65a08dd3c7c00d76 100644
--- a/Source/platform/graphics/ImageBuffer.h
+++ b/Source/platform/graphics/ImageBuffer.h
@@ -39,11 +39,11 @@
 #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 {
 
@@ -162,13 +162,8 @@ private:
     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);