tracing: restructure to the components/tracing folder

chrome/browser/tracing/navigation_tracing.cc

 // 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 "chrome/browser/tracing/navigation_tracing.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/tracing/crash_service_uploader.h"
 #include "chrome/common/chrome_switches.h"
-#include "components/tracing/tracing_switches.h"
+#include "components/tracing/common/tracing_switches.h"
 #include "content/public/browser/background_tracing_config.h"
 #include "content/public/browser/background_tracing_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_frame_host.h"
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(tracing::NavigationTracingObserver);
 
 using content::RenderFrameHost;
 
 namespace tracing {
@@ skipping 82 matching lines @@
     content::BackgroundTracingManager::GetInstance()->TriggerNamedEvent(
         navigation_handle,
         content::BackgroundTracingManager::StartedFinalizingCallback());
   }
 }
 
 content::BackgroundTracingManager::TriggerHandle
     NavigationTracingObserver::navigation_handle = -1;
 
 }  // namespace tracing