cros: Explicitly manage app session lifetime.

chrome/browser/lifetime/application_lifetime_aura.cc

Index: chrome/browser/lifetime/application_lifetime_aura.cc
diff --git a/chrome/browser/lifetime/application_lifetime_aura.cc b/chrome/browser/lifetime/application_lifetime_aura.cc
index 0fdbc65e981d6ff78805067c2a3273bad3aaed72..18503158caaa8862809457610a8962cfde5c0550 100644
--- a/chrome/browser/lifetime/application_lifetime_aura.cc
+++ b/chrome/browser/lifetime/application_lifetime_aura.cc
@@ -5,7 +5,6 @@
 #include "chrome/browser/lifetime/application_lifetime.h"
 
 #include "base/command_line.h"
-#include "chrome/browser/app_mode/app_mode_utils.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "chrome/common/chrome_switches.h"
@@ -47,8 +46,7 @@ void HandleAppExitingForPlatform() {
   ash::Shell::GetInstance()->output_configurator()->Stop();
 
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kDisableZeroBrowsersOpenForTests) &&
-      !chrome::IsRunningInAppMode()) {
+      switches::kDisableZeroBrowsersOpenForTests)) {
     // App is exiting, call EndKeepAlive() on behalf of Aura Shell.
     EndKeepAlive();
     // Make sure we have notified the session manager that we are exiting.