CSS Background Blending doesn't work for svg layers.

Source/core/svg/graphics/SVGImage.cpp

Index: Source/core/svg/graphics/SVGImage.cpp
diff --git a/Source/core/svg/graphics/SVGImage.cpp b/Source/core/svg/graphics/SVGImage.cpp
index 333ae765b533d1fee5d173e272220f65aaa61a03..9cb6bc8900be7f70db825e2a03588fdf1936f0ce 100644
--- a/Source/core/svg/graphics/SVGImage.cpp
+++ b/Source/core/svg/graphics/SVGImage.cpp
@@ -190,7 +190,7 @@ void SVGImage::drawPatternForContainer(GraphicsContext* context, const FloatSize
     image->drawPattern(context, scaledSrcRect, scaleWithoutCTM, phase, compositeOp, dstRect);
 }
 
-void SVGImage::draw(GraphicsContext* context, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator compositeOp, BlendMode)
+void SVGImage::draw(GraphicsContext* context, const FloatRect& dstRect, const FloatRect& srcRect, CompositeOperator compositeOp, BlendMode blendMode)
 {
     if (!m_page)
         return;
@@ -198,7 +198,7 @@ void SVGImage::draw(GraphicsContext* context, const FloatRect& dstRect, const Fl
     FrameView* view = frameView();
 
     GraphicsContextStateSaver stateSaver(*context);
-    context->setCompositeOperation(compositeOp);
+    context->setCompositeOperation(compositeOp, blendMode);
     context->clip(enclosingIntRect(dstRect));
     if (compositeOp != CompositeSourceOver)
         context->beginTransparencyLayer(1);