Always use arc::InstanceHolder<T>::GetInstanceForMethod

components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.cc

Index: components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.cc
diff --git a/components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.cc b/components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.cc
index 8b4416d3d1f9cdad918f26c3a2042641aaedd609..8f0b7df5bdec3d6e5eb86805c50a1bf84472a014 100644
--- a/components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.cc
+++ b/components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.cc
@@ -34,8 +34,11 @@ ArcBootPhaseMonitorBridge::~ArcBootPhaseMonitorBridge() {
 
 void ArcBootPhaseMonitorBridge::OnInstanceReady() {
   DCHECK(thread_checker_.CalledOnValidThread());
-  arc_bridge_service()->boot_phase_monitor()->instance()->Init(
-      binding_.CreateInterfacePtrAndBind());
+  auto* instance =
+      arc_bridge_service()->boot_phase_monitor()->GetInstanceForMethod("Init");
+  if (!instance)
+    return;
+  instance->Init(binding_.CreateInterfacePtrAndBind());
 }
 
 void ArcBootPhaseMonitorBridge::OnInstanceClosed() {