tracing: restructure to the components/tracing folder

chrome/browser/about_flags.cc

 // Copyright (c) 2012 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/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 36 matching lines @@
 #include "components/ntp_tiles/switches.h"
 #include "components/offline_pages/offline_page_feature.h"
 #include "components/omnibox/browser/omnibox_switches.h"
 #include "components/password_manager/core/common/password_manager_features.h"
 #include "components/proximity_auth/switches.h"
 #include "components/quirks/switches.h"
 #include "components/search/search_switches.h"
 #include "components/security_state/switches.h"
 #include "components/signin/core/common/signin_switches.h"
 #include "components/sync_driver/sync_driver_switches.h"
-#include "components/tracing/tracing_switches.h"
+#include "components/tracing/common/tracing_switches.h"
 #include "components/translate/core/browser/translate_prefs.h"
 #include "components/version_info/version_info.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/common/content_features.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/feature_h264_with_openh264_ffmpeg.h"
 #include "content/public/common/features.h"
 #include "gin/public/gin_features.h"
 #include "grit/components_strings.h"
 #include "media/base/media_switches.h"
@@ skipping 2018 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags