Change includes of histogram.h to histogram_macros.h.

components/sync/syncable/directory.cc

 // Copyright 2013 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/sync/syncable/directory.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <iterator>
 #include <utility>
 
 #include "base/base64.h"
 #include "base/guid.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/trace_event/trace_event.h"
 #include "components/sync/base/attachment_id_proto.h"
 #include "components/sync/base/unique_position.h"
 #include "components/sync/base/unrecoverable_error_handler.h"
 #include "components/sync/syncable/entry.h"
 #include "components/sync/syncable/entry_kernel.h"
 #include "components/sync/syncable/in_memory_directory_backing_store.h"
 #include "components/sync/syncable/model_neutral_mutable_entry.h"
@@ skipping 1516 matching lines @@
 Directory::Kernel* Directory::kernel() {
   return kernel_;
 }
 
 const Directory::Kernel* Directory::kernel() const {
   return kernel_;
 }
 
 }  // namespace syncable
 }  // namespace syncer