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

Source/core/animation/TransformSVGInterpolation.h

Index: Source/core/animation/TransformSVGInterpolation.h
diff --git a/Source/core/animation/TransformSVGInterpolation.h b/Source/core/animation/TransformSVGInterpolation.h
index cd596384d12daf3474cdab416372947ebcbe320d..85d563c0f6a00fa3610ccebd959d18d54e2fbc0b 100644
--- a/Source/core/animation/TransformSVGInterpolation.h
+++ b/Source/core/animation/TransformSVGInterpolation.h
@@ -7,10 +7,12 @@
 
 #include "core/animation/SVGInterpolation.h"
 #include "core/svg/SVGTransformList.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 class TransformSVGInterpolation {
+    STATIC_ONLY(TransformSVGInterpolation);
 public:
     typedef SVGTransformList ListType;
     typedef SVGTransformType NonInterpolableType;