Revert 102385 - Use Skia's implementation of Gaussian blur when accelerated filters

Source/WebCore/platform/graphics/skia/ImageBufferSkia.cpp

 /*
  * Copyright (c) 2008, Google Inc. All rights reserved.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 134 matching lines @@
     return m_context.get();
 }
 
 size_t ImageBuffer::dataSize() const
 {
     return m_size.width() * m_size.height() * 4;
 }
 
 PassRefPtr<Image> ImageBuffer::copyImage(BackingStoreCopy copyBehavior) const
 {
-    return BitmapImageSingleFrameSkia::create(*m_data.m_platformContext.bitmap(), copyBehavior == CopyBackingStore);
+    ASSERT(copyBehavior == CopyBackingStore);
+    return BitmapImageSingleFrameSkia::create(*m_data.m_platformContext.bitmap(), true);
 }
 
 PlatformLayer* ImageBuffer::platformLayer() const
 {
     return m_data.m_platformLayer.get();
 }
 
 void ImageBuffer::clip(GraphicsContext* context, const FloatRect& rect) const
 {
     context->platformContext()->beginLayerClippedToImage(rect, this);
@@ skipping 186 matching lines @@
 
     Vector<char> encodedImage, base64Data;
     if (!encodeImage(imageData, mimeType, quality, &encodedImage))
         return "data:,";
 
     base64Encode(encodedImage, base64Data);
     return "data:" + mimeType + ";base64," + base64Data;
 }
 
 } // namespace WebCore