Moving platform tracing things into platform/tracing.

third_party/WebKit/Source/core/frame/VisualViewport.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 27 matching lines @@
 #include "core/frame/PageScaleConstraintsSet.h"
 #include "core/frame/Settings.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/layout/TextAutosizer.h"
 #include "core/layout/compositing/PaintLayerCompositor.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/Page.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
 #include "platform/Histogram.h"
-#include "platform/TraceEvent.h"
 #include "platform/geometry/DoubleRect.h"
 #include "platform/geometry/FloatSize.h"
 #include "platform/graphics/CompositorMutableProperties.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/scroll/Scrollbar.h"
 #include "platform/scroll/ScrollbarThemeOverlay.h"
+#include "platform/tracing/TraceEvent.h"
 #include "public/platform/WebCompositorSupport.h"
 #include "public/platform/WebScrollbar.h"
 #include "public/platform/WebScrollbarLayer.h"
 #include <memory>
 
 namespace blink {
 
 VisualViewport::VisualViewport(FrameHost& owner)
     : m_frameHost(&owner)
     , m_scale(1)
@@ skipping 767 matching lines @@
     } else if (graphicsLayer == m_rootTransformLayer.get()) {
         name =  "Root Transform Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink