[SVG] SVGAnimatedString{,List} migration to new SVG property impl.

Source/core/svg/SVGFEMergeNodeElement.h

Index: Source/core/svg/SVGFEMergeNodeElement.h
diff --git a/Source/core/svg/SVGFEMergeNodeElement.h b/Source/core/svg/SVGFEMergeNodeElement.h
index bed9e3457065d4474e680aca98f738509d880134..d928a076f167b1ce52ab18b166f7d705c5f5130e 100644
--- a/Source/core/svg/SVGFEMergeNodeElement.h
+++ b/Source/core/svg/SVGFEMergeNodeElement.h
@@ -30,6 +30,7 @@ namespace WebCore {
 class SVGFEMergeNodeElement FINAL : public SVGElement {
 public:
     static PassRefPtr<SVGFEMergeNodeElement> create(Document&);
+    SVGAnimatedString* in1() { return m_in1.get(); }
 
 private:
     explicit SVGFEMergeNodeElement(Document&);
@@ -40,8 +41,8 @@ private:
 
     virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE { return false; }
 
+    RefPtr<SVGAnimatedString> m_in1;
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGFEMergeNodeElement)
-        DECLARE_ANIMATED_STRING(In1, in1)
     END_DECLARE_ANIMATED_PROPERTIES
 };