Make classes and structures in Source/core/animation fast-allocated.

Source/core/animation/PointSVGInterpolation.h

Index: Source/core/animation/PointSVGInterpolation.h
diff --git a/Source/core/animation/PointSVGInterpolation.h b/Source/core/animation/PointSVGInterpolation.h
index 9f4f16422e73740382ee1b410841e3e4450b48e3..0fddc78a70bb2fe582c318c6c16bc67f90766be4 100644
--- a/Source/core/animation/PointSVGInterpolation.h
+++ b/Source/core/animation/PointSVGInterpolation.h
@@ -7,10 +7,12 @@
 
 #include "core/animation/SVGInterpolation.h"
 #include "core/svg/SVGPointList.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 class PointSVGInterpolation {
+    STATIC_ONLY(PointSVGInterpolation);
 public:
     typedef SVGPointList ListType;
     typedef void NonInterpolableType;