Use SkXfermode::Mode in code related to Image.

Source/platform/graphics/skia/NativeImageSkia.h

 /*
  * Copyright (c) 2008, 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 55 matching lines @@
     // Returns true if the entire image has been decoded.
     bool isDataComplete() const { return bitmap().isImmutable(); }
 
     // Get reference to the internal SkBitmap representing this image.
     const SkBitmap& bitmap() const { return m_bitmap; }
 
     void draw(
         GraphicsContext*,
         const SkRect& srcRect,
         const SkRect& destRect,
-        CompositeOperator,
-        WebBlendMode) const;
+        SkXfermode::Mode) const;
 
     void drawPattern(
         GraphicsContext*,
         const FloatRect& srcRect,
         const FloatSize& scale,
         const FloatPoint& phase,
-        CompositeOperator,
+        SkXfermode::Mode,
         const FloatRect& destRect,
-        WebBlendMode,
         const IntSize& repeatSpacing) const;
 
 private:
     NativeImageSkia() { }
     explicit NativeImageSkia(const SkBitmap& bitmap) : m_bitmap(bitmap) { }
 
     SkBitmap m_bitmap;
 };
 
 } // namespace blink
 
 #endif  // NativeImageSkia_h