arc: Use GET_INTERFACE_FOR_METHOD macro

components/arc/metrics/arc_metrics_service.cc

Index: components/arc/metrics/arc_metrics_service.cc
diff --git a/components/arc/metrics/arc_metrics_service.cc b/components/arc/metrics/arc_metrics_service.cc
index b82d65cd8bac81625be2fc160385234978c1caed..6666fd449ccf074bd30a1c46cfcb72acd4b7842c 100644
--- a/components/arc/metrics/arc_metrics_service.cc
+++ b/components/arc/metrics/arc_metrics_service.cc
@@ -75,9 +75,8 @@ void ArcMetricsService::OnProcessInstanceClosed() {
 }
 
 void ArcMetricsService::RequestProcessList() {
-  mojom::ProcessInstance* process_instance =
-      arc_bridge_service()->process()->GetInstanceForMethod(
-          "RequestProcessList");
+  mojom::ProcessInstance* process_instance = GET_INSTANCE_FOR_METHOD(
+      arc_bridge_service()->process(), RequestProcessList);
   if (!process_instance)
     return;
   VLOG(2) << "RequestProcessList";
@@ -120,7 +119,7 @@ void ArcMetricsService::OnArcStartTimeRetrieved(
     return;
   }
   auto* instance =
-      arc_bridge_service()->metrics()->GetInstanceForMethod("Init");
+      GET_INSTANCE_FOR_METHOD(arc_bridge_service()->metrics(), Init);
   if (!instance)
     return;