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

Source/core/animation/Timing.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef Timing_h
 #define Timing_h
 
 #include "platform/animation/TimingFunction.h"
+#include "wtf/Allocator.h"
 #include "wtf/MathExtras.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 struct Timing {
+    WTF_MAKE_FAST_ALLOCATED(Timing);
+public:
     enum FillMode {
         FillModeAuto,
         FillModeNone,
         FillModeForwards,
         FillModeBackwards,
         FillModeBoth
     };
 
     static String fillModeString(FillMode);
 
@@ skipping 58 matching lines @@
     double iterationCount;
     double iterationDuration;
     double playbackRate;
     PlaybackDirection direction;
     RefPtr<TimingFunction> timingFunction;
 };
 
 } // namespace blink
 
 #endif