Moving platform tracing things into platform/tracing.

third_party/WebKit/Source/platform/graphics/paint/PaintArtifact.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/graphics/paint/PaintArtifact.h"
 
-#include "platform/TraceEvent.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/graphics/paint/DrawingDisplayItem.h"
+#include "platform/tracing/TraceEvent.h"
 #include "public/platform/WebDisplayItemList.h"
 #include "third_party/skia/include/core/SkRegion.h"
 
 namespace blink {
 
 namespace {
 
 void computeChunkBoundsAndOpaqueness(const DisplayItemList& displayItems,
                                      Vector<PaintChunk>& paintChunks) {
   for (PaintChunk& chunk : paintChunks) {
@@ skipping 71 matching lines @@
   size_t visualRectIndex = 0;
   for (const DisplayItem& displayItem : m_displayItemList) {
     displayItem.appendToWebDisplayItemList(
         m_displayItemList.visualRect(visualRectIndex), list);
     visualRectIndex++;
   }
   list->setIsSuitableForGpuRasterization(isSuitableForGpuRasterization());
 }
 
 }  // namespace blink