Remove OnRecordingDisabled() metrics client interface.

chrome/browser/metrics/chrome_metrics_service_client.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 "chrome/browser/metrics/chrome_metrics_service_client.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 266 matching lines @@
 
 metrics::MetricsService* ChromeMetricsServiceClient::GetMetricsService() {
   return metrics_service_.get();
 }
 
 void ChromeMetricsServiceClient::SetMetricsClientId(
     const std::string& client_id) {
   crash_keys::SetMetricsClientIdFromGUID(client_id);
 }
 
-void ChromeMetricsServiceClient::OnRecordingDisabled() {
-  // If we're shutting down, don't drop the metrics_client_id, so that late
-  // crashes won't lose it.
-  if (!g_browser_process->IsShuttingDown())
-    crash_keys::ClearMetricsClientId();
-}
-
 bool ChromeMetricsServiceClient::IsOffTheRecordSessionActive() {
   return chrome::IsIncognitoSessionActive();
 }
 
 int32_t ChromeMetricsServiceClient::GetProduct() {
   return metrics::ChromeUserMetricsExtension::CHROME;
 }
 
 std::string ChromeMetricsServiceClient::GetApplicationLocale() {
   return g_browser_process->GetApplicationLocale();
@@ skipping 489 matching lines @@
   }
 }
 
 void ChromeMetricsServiceClient::OnURLOpenedFromOmnibox(OmniboxLog* log) {
   metrics_service_->OnApplicationNotIdle();
 }
 
 bool ChromeMetricsServiceClient::IsUMACellularUploadLogicEnabled() {
   return metrics::IsCellularLogicEnabled();
 }