Prioritize ARC instance only when it is needed

components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.h

Index: components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.h
diff --git a/components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.h b/components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.h
deleted file mode 100644
index b42137dbdbf7faf9dbf94d95a71bbe95f6400050..0000000000000000000000000000000000000000
--- a/components/arc/boot_phase_monitor/arc_boot_phase_monitor_bridge.h
+++ /dev/null
@@ -1,45 +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.
-
-#ifndef COMPONENTS_ARC_BOOT_PHASE_MONITOR_ARC_BOOT_PHASE_MONITOR_BRIDGE_H_
-#define COMPONENTS_ARC_BOOT_PHASE_MONITOR_ARC_BOOT_PHASE_MONITOR_BRIDGE_H_
-
-#include "base/macros.h"
-#include "base/threading/thread_checker.h"
-#include "components/arc/arc_service.h"
-#include "components/arc/common/boot_phase_monitor.mojom.h"
-#include "components/arc/instance_holder.h"
-#include "mojo/public/cpp/bindings/binding.h"
-
-namespace arc {
-
-class ArcBridgeService;
-
-// Receives boot phase notifications from ARC.
-class ArcBootPhaseMonitorBridge
-    : public ArcService,
-      public InstanceHolder<mojom::BootPhaseMonitorInstance>::Observer,
-      public mojom::BootPhaseMonitorHost {
- public:
-  explicit ArcBootPhaseMonitorBridge(ArcBridgeService* bridge_service);
-  ~ArcBootPhaseMonitorBridge() override;
-
-  // InstanceHolder<mojom::BootPhaseMonitorInstance>::Observer
-  void OnInstanceReady() override;
-  void OnInstanceClosed() override;
-
-  // mojom::BootPhaseMonitorHost
-  void OnBootCompleted() override;
-
- private:
-  mojo::Binding<mojom::BootPhaseMonitorHost> binding_;
-
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(ArcBootPhaseMonitorBridge);
-};
-
-}  // namespace arc
-
-#endif  // COMPONENTS_ARC_BOOT_PHASE_MONITOR_ARC_BOOT_PHASE_MONITOR_BRIDGE_H_