Remove NO_LOG LogType enum value.

components/metrics/metrics_log_base.cc

 // Copyright 2014 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/metrics/metrics_log_base.h"
 
 #include "base/metrics/histogram_base.h"
 #include "base/metrics/histogram_samples.h"
 #include "components/metrics/metrics_hashes.h"
 #include "components/metrics/proto/histogram_event.pb.h"
@@ skipping 19 matching lines @@
 }
 
 }  // namespace
 
 MetricsLogBase::MetricsLogBase(const std::string& client_id,
                                int session_id,
                                LogType log_type,
                                const std::string& version_string)
     : locked_(false),
       log_type_(log_type) {
-  DCHECK_NE(NO_LOG, log_type);
   if (IsTestingID(client_id))
     uma_proto_.set_client_id(0);
   else
     uma_proto_.set_client_id(Hash(client_id));
 
   uma_proto_.set_session_id(session_id);
   uma_proto_.mutable_system_profile()->set_build_timestamp(GetBuildTime());
   uma_proto_.mutable_system_profile()->set_app_version(version_string);
 }
 
@@ skipping 79 matching lines @@
     if (i + 1 < histogram_proto->bucket_size() &&
         bucket->max() == histogram_proto->bucket(i + 1).min()) {
       bucket->clear_max();
     } else if (bucket->max() == bucket->min() + 1) {
       bucket->clear_min();
     }
   }
 }
 
 }  // namespace metrics