Refactor SetClientID such that metrics rather than crash backs up the client id in Google Update set

components/metrics/metrics_service.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.
 
 //------------------------------------------------------------------------------
 // Description of the life cycle of a instance of MetricsService.
 //
 //  OVERVIEW
 //
 // A MetricsService instance is typically created at application startup.  It is
@@ skipping 384 matching lines @@
 }
 
 void MetricsService::EnableRecording() {
   DCHECK(IsSingleThreaded());
 
   if (recording_active_)
     return;
   recording_active_ = true;
 
   state_manager_->ForceClientIdCreation();
-  client_->SetClientID(state_manager_->client_id());
+  client_->RegisterClientID(state_manager_->client_id());
   if (!log_manager_.current_log())
     OpenNewLog();
 
   for (size_t i = 0; i < metrics_providers_.size(); ++i)
     metrics_providers_[i]->OnRecordingEnabled();
 
   base::RemoveActionCallback(action_callback_);
   action_callback_ = base::Bind(&MetricsService::OnUserAction,
                                 base::Unretained(this));
   base::AddActionCallback(action_callback_);
@@ skipping 785 matching lines @@
   RecordCurrentState(local_state_);
 }
 
 void MetricsService::RecordCurrentState(PrefService* pref) {
   pref->SetInt64(metrics::prefs::kStabilityLastTimestampSec,
                  Time::Now().ToTimeT());
 
   for (size_t i = 0; i < metrics_providers_.size(); ++i)
     metrics_providers_[i]->RecordCurrentState();
 }