[Launcher per display] Removed Shell::status_area_widget(), system_tray()

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 faab7052a730ede2346ed8f5800e12f872ebe051..258573f12a0e6b698526e6cd1af8cb3403b74b97 100644
--- a/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
+++ b/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
@@ -763,8 +763,8 @@ class SystemTrayDelegate : public ash::SystemTrayDelegate,
   }
 
  private:
-  ash::SystemTray* GetSystemTray() {
-    return ash::Shell::GetInstance()->system_tray();
+  ash::SystemTray* GetPrimarySystemTray() {
+    return ash::Shell::GetInstance()->GetPrimarySystemTray();
   }
 
   ash::SystemTrayNotifier* GetSystemTrayNotifier() {
@@ -992,7 +992,7 @@ class SystemTrayDelegate : public ash::SystemTrayDelegate,
     RefreshNetworkObserver(crosnet);
     RefreshNetworkDeviceObserver(crosnet);
     data_promo_notification_->ShowOptionalMobileDataPromoNotification(
-        crosnet, GetSystemTray(), this);
+        crosnet, GetPrimarySystemTray(), this);
 
     NotifyRefreshNetwork();
   }