InlinedVisitor: Migrate animation to use inlined tracing

Source/core/animation/CompositorPendingAnimations.cpp

 /*
  * 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 125 matching lines @@
         if (compositorGroup && player->compositorGroup() != compositorGroup) {
             // Still waiting.
             m_waitingForCompositorAnimationStart.append(player);
             continue;
         }
         player->notifyCompositorStartTime(monotonicAnimationStartTime - player->timeline()->zeroTime());
     }
 
 }
 
-void CompositorPendingAnimations::trace(Visitor* visitor)
+DEFINE_TRACE(CompositorPendingAnimations)
 {
     visitor->trace(m_pending);
     visitor->trace(m_waitingForCompositorAnimationStart);
 }
 
 } // namespace