Use std::default_delete as the default deleter for scoped_ptr.

components/proximity_auth/metrics.cc

 // Copyright 2015 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/proximity_auth/metrics.h"
 
+#include <algorithm>
+
 #include "base/logging.h"
 #include "base/md5.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/sys_byteorder.h"
 
 namespace proximity_auth {
 namespace metrics {
 
 namespace {
@@ skipping 55 matching lines @@
 
 void RecordRemoteSecuritySettingsState(RemoteSecuritySettingsState state) {
   DCHECK(state < RemoteSecuritySettingsState::COUNT);
   UMA_HISTOGRAM_ENUMERATION(
       "EasyUnlock.RemoteLockScreenState", static_cast<int>(state),
       static_cast<int>(RemoteSecuritySettingsState::COUNT));
 }
 
 }  // namespace metrics
 }  // namespace proximity_auth