Moving platform tracing things into platform/tracing.

third_party/WebKit/Source/core/dom/CompositorProxyClient.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/CompositorProxyClient.h"
 
-#include "platform/TraceEvent.h"
+#include "platform/tracing/TraceEvent.h"
 
 namespace blink {
 
 CompositorProxyClient* CompositorProxyClient::from(WorkerClients* clients) {
   return static_cast<CompositorProxyClient*>(
       Supplement<WorkerClients>::from(clients, supplementName()));
 }
 
 const char* CompositorProxyClient::supplementName() {
   return "CompositorProxyClient";
 }
 
 void provideCompositorProxyClientTo(WorkerClients* clients,
                                     CompositorProxyClient* client) {
   clients->provideSupplement(CompositorProxyClient::supplementName(), client);
 }
 
 }  // namespace blink