Move Chrome terminating notification out of //apps

apps/app_lifetime_monitor.h

Index: apps/app_lifetime_monitor.h
diff --git a/apps/app_lifetime_monitor.h b/apps/app_lifetime_monitor.h
index 8af74c24875fbf3336d58994485855c91bc489d9..7fe1ef5b528effe74ce61557abbd90ae96db1ee3 100644
--- a/apps/app_lifetime_monitor.h
+++ b/apps/app_lifetime_monitor.h
@@ -37,10 +37,6 @@ class AppLifetimeMonitor : public KeyedService,
     }
     // Called when the app stops running.
     virtual void OnAppStop(Profile* profile, const std::string& app_id) {}
-    // Called when chrome is about to terminate. This gives observers a chance
-    // to do something before the apps shut down. This is a system-wide event
-    // so there is no associated profile and app id.
-    virtual void OnChromeTerminating() {}
 
    protected:
     virtual ~Observer() {}
@@ -73,7 +69,6 @@ class AppLifetimeMonitor : public KeyedService,
   void NotifyAppActivated(const std::string& app_id);
   void NotifyAppDeactivated(const std::string& app_id);
   void NotifyAppStop(const std::string& app_id);
-  void NotifyChromeTerminating();
 
   content::NotificationRegistrar registrar_;
   Profile* profile_;