Use GraphicContext::drawImageBuffer in FEBlend

Source/platform/graphics/GraphicsContext.cpp

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2013 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 1026 matching lines @@
     if (hRule == Image::StretchTile && vRule == Image::StretchTile) {
         // Just do a scale.
         drawImage(image, dest, srcRect, op);
         return;
     }
 
     image->drawTiled(this, dest, srcRect, tileScaleFactor, hRule, vRule, op);
 }
 
 void GraphicsContext::drawImageBuffer(ImageBuffer* image, const FloatRect& dest,
-    const FloatRect* src, CompositeOperator op)
+    const FloatRect* src, CompositeOperator op, WebBlendMode blendMode)
 {
     if (contextDisabled() || !image)
         return;
 
-    image->draw(this, dest, src, op);
+    image->draw(this, dest, src, op, blendMode);
 }
 
 void GraphicsContext::drawPicture(PassRefPtr<SkPicture> picture, const FloatRect& dest, const FloatRect& src, CompositeOperator op, WebBlendMode blendMode)
 {
     if (contextDisabled() || !picture)
         return;
 
     SkPaint picturePaint;
     picturePaint.setXfermode(WebCoreCompositeToSkiaComposite(op, blendMode).get());
     SkRect skBounds = WebCoreFloatRectToSKRect(dest);
@@ skipping 787 matching lines @@
 
 void GraphicsContext::didDrawTextInRect(const SkRect& textRect)
 {
     if (m_trackTextRegion) {
         TRACE_EVENT0("skia", "GraphicsContext::didDrawTextInRect");
         m_textRegion.join(textRect);
     }
 }
 
 }