Made launcher hidden when kicking off chrome in app mode.

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 5cfca40cd10c761cb85628cf73d68595eaead3ad..0b0ae406c7cc7eb107b58b63c81707d7d53935b8 100644
--- a/chrome/browser/lifetime/application_lifetime_aura.cc
+++ b/chrome/browser/lifetime/application_lifetime_aura.cc
@@ -6,6 +6,7 @@
 
 #include "base/command_line.h"
 #include "chrome/common/chrome_switches.h"
+#include "chrome/common/switch_utils.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/notifications/notification_ui_manager.h"
 #include "ui/views/widget/widget.h"
@@ -38,7 +39,8 @@ void HandleAppExitingForPlatform() {
 
 #if defined(OS_CHROMEOS)
   if (!CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kDisableZeroBrowsersOpenForTests)) {
+      switches::kDisableZeroBrowsersOpenForTests) &&
+      !switches::IsRunningInAppMode()) {
     // App is exiting, call EndKeepAlive() on behalf of Aura Shell.
     EndKeepAlive();
     // Make sure we have notified the session manager that we are exiting.