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

Source/core/animation/animatable/AnimatableColor.h

Index: Source/core/animation/animatable/AnimatableColor.h
diff --git a/Source/core/animation/animatable/AnimatableColor.h b/Source/core/animation/animatable/AnimatableColor.h
index d501c524a6660c5d5a0a89a7647291c17cf13d48..b6f05dbf66ad2d63be7954aeeaf4d07f138dd9d5 100644
--- a/Source/core/animation/animatable/AnimatableColor.h
+++ b/Source/core/animation/animatable/AnimatableColor.h
@@ -34,10 +34,12 @@
 #include "core/CoreExport.h"
 #include "core/animation/animatable/AnimatableValue.h"
 #include "platform/graphics/Color.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 class CORE_EXPORT AnimatableColorImpl {
+    DISALLOW_ALLOCATION();
 public:
     AnimatableColorImpl(float red, float green, float blue, float alpha);
     AnimatableColorImpl(Color);