Fix background blending for some cases where it did not work at all. The fix adds the blendMode par…

Source/core/svg/graphics/SVGImageForContainer.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 24 matching lines @@
     return roundedIntSize(scaledContainerSize);
 }
 
 void SVGImageForContainer::draw(GraphicsContext* context, const FloatRect& dstRect,
     const FloatRect& srcRect, CompositeOperator compositeOp, BlendMode blendMode)
 {
     m_image->drawForContainer(context, m_containerSize, m_zoom, dstRect, srcRect, compositeOp, blendMode);
 }
 
 void SVGImageForContainer::drawPattern(GraphicsContext* context, const FloatRect& srcRect, const FloatSize& scale,
-    const FloatPoint& phase, CompositeOperator compositeOp, const FloatRect& dstRect, BlendMode)
+    const FloatPoint& phase, CompositeOperator compositeOp, const FloatRect& dstRect, BlendMode blendMode)
 {
-    m_image->drawPatternForContainer(context, m_containerSize, m_zoom, srcRect, scale, phase, compositeOp, dstRect);
+    m_image->drawPatternForContainer(context, m_containerSize, m_zoom, srcRect, scale, phase, compositeOp, dstRect, blendMode);
 }
 
 PassRefPtr<NativeImageSkia> SVGImageForContainer::nativeImageForCurrentFrame()
 {
     return m_image->nativeImageForCurrentFrame();
 }
 
 } // namespace WebCore