Moving platform tracing things into platform/tracing.

third_party/WebKit/Source/core/paint/FirstMeaningfulPaintDetector.cpp

 // Copyright 2016 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 "core/paint/FirstMeaningfulPaintDetector.h"
 
 #include "core/css/FontFaceSet.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/paint/PaintTiming.h"
-#include "platform/TraceEvent.h"
+#include "platform/tracing/TraceEvent.h"
 
 namespace blink {
 
 namespace {
 
 // Web fonts that laid out more than this number of characters block First
 // Meaningful Paint.
 const int kBlankCharactersThreshold = 200;
 
 // FirstMeaningfulPaintDetector stops observing layouts and reports First
@@ skipping 93 matching lines @@
   if (m_provisionalFirstMeaningfulPaint)
     m_paintTiming->setFirstMeaningfulPaint(m_provisionalFirstMeaningfulPaint);
   m_state = Reported;
 }
 
 DEFINE_TRACE(FirstMeaningfulPaintDetector) {
   visitor->trace(m_paintTiming);
 }
 
 }  // namespace blink