Reduce plugin_metrics_provider_ usage in MetricsService

chrome/browser/metrics/metrics_services_manager.cc

Index: chrome/browser/metrics/metrics_services_manager.cc
diff --git a/chrome/browser/metrics/metrics_services_manager.cc b/chrome/browser/metrics/metrics_services_manager.cc
index 8f806232524c3fd23f941d5c8b76c43e7f8557f8..8a4698c270c461b21e8ef27a06576b8ad9dd87c5 100644
--- a/chrome/browser/metrics/metrics_services_manager.cc
+++ b/chrome/browser/metrics/metrics_services_manager.cc
@@ -58,6 +58,11 @@ MetricsServicesManager::GetVariationsService() {
   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_) {