Moving platform tracing things into platform/tracing.

third_party/WebKit/Source/core/dom/IntersectionObserverController.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/dom/IntersectionObserverController.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/TaskRunnerHelper.h"
-#include "platform/TraceEvent.h"
+#include "platform/tracing/TraceEvent.h"
 
 namespace blink {
 
 IntersectionObserverController* IntersectionObserverController::create(
     Document* document) {
   IntersectionObserverController* result =
       new IntersectionObserverController(document);
   result->suspendIfNeeded();
   return result;
 }
@@ skipping 72 matching lines @@
   m_trackedIntersectionObservers.removeAll(toRemove);
 }
 
 DEFINE_TRACE(IntersectionObserverController) {
   visitor->trace(m_trackedIntersectionObservers);
   visitor->trace(m_pendingIntersectionObservers);
   ActiveDOMObject::trace(visitor);
 }
 
 }  // namespace blink