[S.P.] Move filter painting to SVGFilterPainter.

Source/core/paint/SVGPaintContext.cpp

Index: Source/core/paint/SVGPaintContext.cpp
diff --git a/Source/core/paint/SVGPaintContext.cpp b/Source/core/paint/SVGPaintContext.cpp
index 2193366815f51015d3d593e301dbd820fe5c9bc5..6b6f40336922963cc83b0a7577cbdaa6ee31e2d7 100644
--- a/Source/core/paint/SVGPaintContext.cpp
+++ b/Source/core/paint/SVGPaintContext.cpp
@@ -34,6 +34,7 @@
 #include "core/layout/svg/SVGResources.h"
 #include "core/layout/svg/SVGResourcesCache.h"
 #include "core/paint/LayoutObjectDrawingRecorder.h"
+#include "core/paint/SVGFilterPainter.h"
 #include "core/paint/SVGMaskPainter.h"
 #include "platform/FloatConversion.h"
 
@@ -47,7 +48,7 @@ SVGPaintContext::~SVGPaintContext()
 
         LayoutObjectDrawingRecorder recorder(m_originalPaintInfo->context, *m_object, DisplayItem::SVGFilter, LayoutRect::infiniteIntRect());
         if (!recorder.canUseCachedDrawing())
-            m_filter->finishEffect(m_object, m_originalPaintInfo->context);
+            SVGFilterPainter(*m_filter).finishEffect(m_object, m_originalPaintInfo->context);
 
         // Reset the paint info after the filter effect has been completed.
         // This isn't strictly required (e.g., m_paintInfo.rect is not used
@@ -160,7 +161,7 @@ bool SVGPaintContext::applyFilterIfNecessary(SVGResources* resources)
             return false;
     } else if (LayoutSVGResourceFilter* filter = resources->filter()) {
         m_filter = filter;
-        GraphicsContext* filterContext = filter->prepareEffect(m_object, m_paintInfo.context);
+        GraphicsContext* filterContext = SVGFilterPainter(*filter).prepareEffect(m_object, m_paintInfo.context);
         if (!filterContext)
             return false;