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

components/policy/core/common/cloud/user_cloud_policy_store.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/policy/core/common/cloud/user_cloud_policy_store.h"
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/task_runner_util.h"
 #include "google_apis/gaia/gaia_auth_util.h"
 #include "policy/proto/cloud_policy.pb.h"
 #include "policy/proto/device_management_backend.pb.h"
 #include "policy/proto/policy_signing_key.pb.h"
 
 namespace em = enterprise_management;
 
 namespace policy {
 
@@ skipping 431 matching lines @@
   InstallPolicy(validator->policy_data().Pass(), validator->payload().Pass());
 
   // If the key was rotated, update our local cache of the key.
   if (validator->policy()->has_new_public_key())
     policy_key_ = validator->policy()->new_public_key();
   status_ = STATUS_OK;
   NotifyStoreLoaded();
 }
 
 }  // namespace policy