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diff --git a/WebCore/svg/graphics/cg/SVGResourceMaskerCg.mm b/WebCore/svg/graphics/cg/SVGResourceMaskerCg.mm
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--- a/WebCore/svg/graphics/cg/SVGResourceMaskerCg.mm
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-/*
- * Copyright (C) 2005, 2006 Alexander Kellett <lypanov@kde.org>
- * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
- *
- * 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
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
- */
-
-#include "config.h"
-
-#if ENABLE(SVG)
-#import "SVGResourceMasker.h"
-
-#import "BlockExceptions.h"
-#import "GraphicsContext.h"
-#import "ImageBuffer.h"
-#import "SVGMaskElement.h"
-#import "SVGRenderSupport.h"
-#import "SVGRenderStyle.h"
-#import "SVGResourceFilter.h"
-#import <QuartzCore/CIFilter.h>
-#import <QuartzCore/CoreImage.h>
-
-using namespace std;
-
-namespace WebCore {
-
-static CIImage* applyLuminanceToAlphaFilter(CIImage* inputImage)
-{
-    CIFilter* luminanceToAlpha = [CIFilter filterWithName:@"CIColorMatrix"];
-    [luminanceToAlpha setDefaults];
-    CGFloat alpha[4] = {0.2125f, 0.7154f, 0.0721f, 0.0f};
-    CGFloat zero[4] = {0.0f, 0.0f, 0.0f, 0.0f};
-    [luminanceToAlpha setValue:inputImage forKey:@"inputImage"];  
-    [luminanceToAlpha setValue:[CIVector vectorWithValues:zero count:4] forKey:@"inputRVector"];
-    [luminanceToAlpha setValue:[CIVector vectorWithValues:zero count:4] forKey:@"inputGVector"];
-    [luminanceToAlpha setValue:[CIVector vectorWithValues:zero count:4] forKey:@"inputBVector"];
-    [luminanceToAlpha setValue:[CIVector vectorWithValues:alpha count:4] forKey:@"inputAVector"];
-    [luminanceToAlpha setValue:[CIVector vectorWithValues:zero count:4] forKey:@"inputBiasVector"];
-    return [luminanceToAlpha valueForKey:@"outputImage"];
-}
-
-static CIImage* applyExpandAlphatoGrayscaleFilter(CIImage* inputImage)
-{
-    CIFilter* alphaToGrayscale = [CIFilter filterWithName:@"CIColorMatrix"];
-    CGFloat zero[4] = {0, 0, 0, 0};
-    [alphaToGrayscale setDefaults];
-    [alphaToGrayscale setValue:inputImage forKey:@"inputImage"];
-    [alphaToGrayscale setValue:[CIVector vectorWithValues:zero count:4] forKey:@"inputRVector"];
-    [alphaToGrayscale setValue:[CIVector vectorWithValues:zero count:4] forKey:@"inputGVector"];
-    [alphaToGrayscale setValue:[CIVector vectorWithValues:zero count:4] forKey:@"inputBVector"];
-    [alphaToGrayscale setValue:[CIVector vectorWithX:0.0f Y:0.0f Z:0.0f W:1.0f] forKey:@"inputAVector"];
-    [alphaToGrayscale setValue:[CIVector vectorWithX:1.0f Y:1.0f Z:1.0f W:0.0f] forKey:@"inputBiasVector"];
-    return [alphaToGrayscale valueForKey:@"outputImage"];
-}
-
-static CIImage* transformImageIntoGrayscaleMask(CIImage* inputImage)
-{
-    CIFilter* blackBackground = [CIFilter filterWithName:@"CIConstantColorGenerator"];
-    [blackBackground setValue:[CIColor colorWithRed:0.0f green:0.0f blue:0.0f alpha:1.0f] forKey:@"inputColor"];
-
-    CIFilter* layerOverBlack = [CIFilter filterWithName:@"CISourceOverCompositing"];
-    [layerOverBlack setValue:[blackBackground valueForKey:@"outputImage"] forKey:@"inputBackgroundImage"];  
-    [layerOverBlack setValue:inputImage forKey:@"inputImage"];  
-
-    CIImage* luminanceAlpha = applyLuminanceToAlphaFilter([layerOverBlack valueForKey:@"outputImage"]);
-    CIImage* luminanceAsGrayscale = applyExpandAlphatoGrayscaleFilter(luminanceAlpha);
-    CIImage* alphaAsGrayscale = applyExpandAlphatoGrayscaleFilter(inputImage);
-
-    CIFilter* multipliedGrayscale = [CIFilter filterWithName:@"CIMultiplyCompositing"];
-    [multipliedGrayscale setValue:luminanceAsGrayscale forKey:@"inputBackgroundImage"];  
-    [multipliedGrayscale setValue:alphaAsGrayscale forKey:@"inputImage"];  
-    return [multipliedGrayscale valueForKey:@"outputImage"];
-}
-
-void SVGResourceMasker::applyMask(GraphicsContext* context, const FloatRect& boundingBox)
-{
-    if (!m_mask)
-        m_mask.set(m_ownerElement->drawMaskerContent(boundingBox, m_maskRect).release());
-
-    if (!m_mask)
-        return;
-
-    IntSize maskSize(static_cast<int>(m_maskRect.width()), static_cast<int>(m_maskRect.height()));
-    clampImageBufferSizeToViewport(m_ownerElement->document()->renderer(), maskSize);
-
-    // Create new graphics context in gray scale mode for image rendering
-    auto_ptr<ImageBuffer> grayScaleImage(ImageBuffer::create(maskSize, true));
-    if (!grayScaleImage.get())
-        return;
-
-    BEGIN_BLOCK_OBJC_EXCEPTIONS
-    CGContextRef grayScaleContext = grayScaleImage->context()->platformContext();
-    CIContext* ciGrayscaleContext = [CIContext contextWithCGContext:grayScaleContext options:nil];
-
-    // Transform colorized mask to gray scale
-    CIImage* colorMask = [CIImage imageWithCGImage:m_mask->image()->getCGImageRef()];
-    if (!colorMask)
-        return;
-
-    CIImage* grayScaleMask = transformImageIntoGrayscaleMask(colorMask);
-    [ciGrayscaleContext drawImage:grayScaleMask atPoint:CGPointZero fromRect:CGRectMake(0, 0, maskSize.width(), maskSize.height())];
-
-    CGContextClipToMask(context->platformContext(), m_maskRect, grayScaleImage->image()->getCGImageRef());
-    END_BLOCK_OBJC_EXCEPTIONS
-}
-
-} // namespace WebCore
-
-#endif // ENABLE(SVG)