Revert of Reduce plugin_metrics_provider_ usage in MetricsService

chrome/browser/metrics/metrics_services_manager.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/metrics_services_manager.h"
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/metrics/chrome_metrics_service_client.h"
 #include "chrome/browser/metrics/extensions_metrics_provider.h"
@@ skipping 40 matching lines @@
 MetricsServicesManager::GetVariationsService() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!variations_service_) {
     variations_service_ =
         chrome_variations::VariationsService::Create(local_state_,
                                                      GetMetricsStateManager());
   }
   return variations_service_.get();
 }
 
-void MetricsServicesManager::OnPluginLoadingError(
-    const base::FilePath& plugin_path) {
-  GetMetricsService()->LogPluginLoadingError(plugin_path);
-}
-
 metrics::MetricsStateManager* MetricsServicesManager::GetMetricsStateManager() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!metrics_state_manager_) {
     metrics_state_manager_ = metrics::MetricsStateManager::Create(
         local_state_,
         base::Bind(&MetricsServicesManager::IsMetricsReportingEnabled,
                    base::Unretained(this)));
   }
   return metrics_state_manager_.get();
 }
@@ skipping 11 matching lines @@
 #if defined(GOOGLE_CHROME_BUILD)
 #if defined(OS_CHROMEOS)
   chromeos::CrosSettings::Get()->GetBoolean(chromeos::kStatsReportingPref,
                                             &enabled);
 #else
   enabled = local_state_->GetBoolean(prefs::kMetricsReportingEnabled);
 #endif  // #if defined(OS_CHROMEOS)
 #endif  // defined(GOOGLE_CHROME_BUILD)
   return enabled;
 }