Change histogram.h includes to histogram_macros.h in components/

components/policy/core/common/cloud/cloud_policy_refresh_scheduler.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/policy/core/common/cloud/cloud_policy_refresh_scheduler.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/sequenced_task_runner.h"
 #include "components/policy/core/common/cloud/cloud_policy_constants.h"
 
 namespace policy {
 
 #if defined(OS_ANDROID) || defined(OS_IOS)
 
 const int64 CloudPolicyRefreshScheduler::kDefaultRefreshDelayMs =
     24 * 60 * 60 * 1000;  // 1 day.
 const int64 CloudPolicyRefreshScheduler::kUnmanagedRefreshDelayMs =
@@ skipping 274 matching lines @@
   base::TimeDelta delay =
       std::max((last_refresh_ + delta) - base::Time::NowFromSystemTime(),
                base::TimeDelta());
   refresh_callback_.Reset(
       base::Bind(&CloudPolicyRefreshScheduler::PerformRefresh,
                  base::Unretained(this)));
   task_runner_->PostDelayedTask(FROM_HERE, refresh_callback_.callback(), delay);
 }
 
 }  // namespace policy