Migrate chrome/browser files to histogram_macros.h includes.

chrome/browser/notifications/message_center_stats_collector.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 "chrome/browser/notifications/message_center_stats_collector.h"
 
 #include <stddef.h>
 
 #include <string>
 
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "content/public/browser/user_metrics.h"
 #include "ui/message_center/message_center.h"
 
 MessageCenterStatsCollector::NotificationStats::NotificationStats() {}
 
 MessageCenterStatsCollector::NotificationStats::NotificationStats(
     const std::string& id) : id_(id) {
   for (size_t i = 0; i < NOTIFICATION_ACTION_COUNT; i++) {
     actions_[i] = false;
   }
@@ skipping 121 matching lines @@
 
 void MessageCenterStatsCollector::OnQuietModeChanged(bool in_quiet_mode) {
   if (in_quiet_mode) {
     content::RecordAction(
         base::UserMetricsAction("Notifications.Mute"));
   } else {
     content::RecordAction(
         base::UserMetricsAction("Notifications.Unmute"));
   }
 }