Change includes of histogram.h to histogram_macros.h.

components/metrics/profiler/tracking_synchronizer.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 "components/metrics/profiler/tracking_synchronizer.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/tracked_objects.h"
 #include "components/metrics/profiler/tracking_synchronizer_observer.h"
 #include "components/variations/variations_associated_data.h"
 
 using base::TimeTicks;
 
 namespace metrics {
 
@@ skipping 346 matching lines @@
 
   ++last_used_sequence_number_;
 
   // Watch out for wrapping to a negative number.
   if (last_used_sequence_number_ < 0)
     last_used_sequence_number_ = 1;
   return last_used_sequence_number_;
 }
 
 }  // namespace metrics