aura: Uber tray should not show up on start screen in kiosk mode.

chrome/browser/chromeos/system/ash_system_tray_delegate.cc

Index: chrome/browser/chromeos/system/ash_system_tray_delegate.cc
diff --git a/chrome/browser/chromeos/system/ash_system_tray_delegate.cc b/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
index b538e307150e6202f432eca26b2754398b290319..80a147b370c4c8175b72da3fdead0b0a6162d42d 100644
--- a/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
+++ b/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
@@ -30,6 +30,7 @@
 #include "chrome/browser/chromeos/input_method/input_method_util.h"
 #include "chrome/browser/chromeos/input_method/input_method_whitelist.h"
 #include "chrome/browser/chromeos/input_method/xkeyboard.h"
+#include "chrome/browser/chromeos/kiosk_mode/kiosk_mode_helper.h"
 #include "chrome/browser/chromeos/login/base_login_display_host.h"
 #include "chrome/browser/chromeos/login/login_display_host.h"
 #include "chrome/browser/chromeos/login/user.h"
@@ -135,6 +136,10 @@ class SystemTrayDelegate : public ash::SystemTrayDelegate,
       SystemKeyEventListener::GetInstance()->RemoveCapsLockObserver(this);
   }
 
+  virtual bool GetTrayVisibilityOnStartup() OVERRIDE {
+    return !chromeos::KioskModeHelper::IsKioskModeEnabled();

[sadrul, 2012/03/22 04:15:36]

Does this work correctly if you login (in kiosk mode), and the browser crashes?
(close all browsers, then go to 'Settings and Help' from the tray popup)

[varunjain, 2012/03/22 04:19:38]

Seems to work.

+  }
+
   // Overridden from ash::SystemTrayDelegate:
   virtual const std::string GetUserDisplayName() const OVERRIDE {
     return UserManager::Get()->GetLoggedInUser().GetDisplayName();
@@ -522,6 +527,9 @@ class SystemTrayDelegate : public ash::SystemTrayDelegate,
     switch (type) {
       case chrome::NOTIFICATION_LOGIN_USER_CHANGED: {
         tray_->UpdateAfterLoginStatusChange(GetUserLoginStatus());

[sadrul, 2012/03/22 04:15:36]

Update visibility in SystemTray::UpdateAfterLoginStatusChange instead?

[varunjain, 2012/03/22 04:19:38]

Done.

+        // If tray is not initially visible, show it now that we have logged in.
+        if (!GetTrayVisibilityOnStartup())
+          tray_->SetVisible(true);
         break;
       }
       case chrome::NOTIFICATION_UPGRADE_RECOMMENDED: {