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diff --git a/apps/app_lifetime_monitor_factory.h b/apps/app_lifetime_monitor_factory.h
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+++ b/apps/app_lifetime_monitor_factory.h
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+// Copyright 2013 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 APPS_APP_LIFETIME_MONITOR_FACTORY_H_
+#define APPS_APP_LIFETIME_MONITOR_FACTORY_H_
+
+#include "base/memory/singleton.h"
+#include "components/browser_context_keyed_service/browser_context_keyed_service_factory.h"
+
+class Profile;
+
+namespace apps {
+
+class AppLifetimeMonitor;
+
+// Singleton that owns all AppLifetimeMonitors and associates them with
+// Profiles. Listens for the Profile's destruction notification and cleans up
+// the associated AppLifetimeMonitor.
+class AppLifetimeMonitorFactory : public BrowserContextKeyedServiceFactory {
+ public:
+  static AppLifetimeMonitor* GetForProfile(Profile* profile);
+
+  static AppLifetimeMonitorFactory* GetInstance();
+
+ private:
+  friend struct DefaultSingletonTraits<AppLifetimeMonitorFactory>;
+
+  AppLifetimeMonitorFactory();
+  virtual ~AppLifetimeMonitorFactory();
+
+  // BrowserContextKeyedServiceFactory:
+  virtual BrowserContextKeyedService* BuildServiceInstanceFor(
+      content::BrowserContext* profile) const OVERRIDE;
+  virtual bool ServiceIsCreatedWithBrowserContext() const OVERRIDE;
+  virtual content::BrowserContext* GetBrowserContextToUse(
+    content::BrowserContext* context) const OVERRIDE;
+};
+
+}  // namespace apps
+
+#endif  // APPS_APP_LIFETIME_MONITOR_FACTORY_H_