Prioritize ARC instance only when it is needed

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
deleted file mode 100644
index 79a3e7d7e4ea51e109cb385ee0fdee276a4259de..0000000000000000000000000000000000000000
--- a/components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.cc
+++ /dev/null
@@ -1,58 +0,0 @@
-// Copyright 2016 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 "components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.h"
-
-#include "base/logging.h"
-#include "chromeos/dbus/dbus_thread_manager.h"
-#include "chromeos/dbus/session_manager_client.h"
-#include "components/arc/arc_bridge_service.h"
-
-namespace arc {
-
-namespace {
-
-void PrioritizeArcInstanceCallback(bool success) {
-  VLOG(2) << "Finished prioritizing the instance: result=" << success;
-  if (!success)
-    LOG(WARNING) << "Failed to prioritize ARC";
-}
-
-}  // namespace
-
-ArcBootPhaseMonitorBridge::ArcBootPhaseMonitorBridge(
-    ArcBridgeService* bridge_service)
-    : ArcService(bridge_service), binding_(this) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  arc_bridge_service()->boot_phase_monitor()->AddObserver(this);
-}
-
-ArcBootPhaseMonitorBridge::~ArcBootPhaseMonitorBridge() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  arc_bridge_service()->boot_phase_monitor()->RemoveObserver(this);
-}
-
-void ArcBootPhaseMonitorBridge::OnInstanceReady() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  auto* instance = ARC_GET_INSTANCE_FOR_METHOD(
-      arc_bridge_service()->boot_phase_monitor(), Init);
-  DCHECK(instance);
-  instance->Init(binding_.CreateInterfacePtrAndBind());
-}
-
-void ArcBootPhaseMonitorBridge::OnInstanceClosed() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-}
-
-void ArcBootPhaseMonitorBridge::OnBootCompleted() {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  VLOG(2) << "OnBootCompleted";
-  chromeos::SessionManagerClient* session_manager_client =
-      chromeos::DBusThreadManager::Get()->GetSessionManagerClient();
-  session_manager_client->PrioritizeArcInstance(
-      base::Bind(PrioritizeArcInstanceCallback));
-  session_manager_client->EmitArcBooted();
-}
-
-}  // namespace arc