Refactor m_absoluteTransform out of SVGFilter and into base class.

Source/core/svg/graphics/filters/SVGFilter.cpp

Index: Source/core/svg/graphics/filters/SVGFilter.cpp
diff --git a/Source/core/svg/graphics/filters/SVGFilter.cpp b/Source/core/svg/graphics/filters/SVGFilter.cpp
index 626d2874988141be18c788c593cfbd6073fa1b92..ff85c6aa82306963d8a25c8034fdbafaa068fb2d 100644
--- a/Source/core/svg/graphics/filters/SVGFilter.cpp
+++ b/Source/core/svg/graphics/filters/SVGFilter.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
+ * 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
@@ -26,8 +27,7 @@
 namespace WebCore {
 
 SVGFilter::SVGFilter(const AffineTransform& absoluteTransform, const FloatRect& absoluteSourceDrawingRegion, const FloatRect& targetBoundingBox, const FloatRect& filterRegion, bool effectBBoxMode)
-    : Filter()
-    , m_absoluteTransform(absoluteTransform)
+    : Filter(absoluteTransform)
     , m_absoluteSourceDrawingRegion(absoluteSourceDrawingRegion)
     , m_targetBoundingBox(targetBoundingBox)
     , m_filterRegion(filterRegion)