Move TraceEvent.h from platform/ to wtf/

Source/core/animation/DocumentTimeline.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 18 matching lines @@
  */
 
 #include "config.h"
 #include "core/animation/DocumentTimeline.h"
 
 #include "core/animation/ActiveAnimations.h"
 #include "core/animation/AnimationClock.h"
 #include "core/dom/Document.h"
 #include "core/frame/FrameView.h"
 #include "core/page/Page.h"
-#include "platform/TraceEvent.h"
+#include "wtf/TraceEvent.h"
 
 namespace WebCore {
 
 // This value represents 1 frame at 30Hz plus a little bit of wiggle room.
 // TODO: Plumb a nominal framerate through and derive this value from that.
 const double DocumentTimeline::s_minimumDelay = 0.04;
 
 
 PassRefPtr<DocumentTimeline> DocumentTimeline::create(Document* document, PassOwnPtr<PlatformTiming> timing)
 {
@@ skipping 131 matching lines @@
             count += (timedItem && (timedItem->isCurrent() || timedItem->isInEffect()));
     }
     return count;
 }
 
 void DocumentTimeline::detachFromDocument() {
     m_document = 0;
 }
 
 } // namespace