ash: Status Tray User Icon Update

ash/system/tray/system_tray.cc

Index: ash/system/tray/system_tray.cc
diff --git a/ash/system/tray/system_tray.cc b/ash/system/tray/system_tray.cc
index e3fcf788000688e5837f93680e52b610954fd0e1..11a8322d8a0d8d0da7c67012d3992e9abe585ebb 100644
--- a/ash/system/tray/system_tray.cc
+++ b/ash/system/tray/system_tray.cc
@@ -285,6 +285,11 @@ void SystemTray::UpdateAfterLoginStatusChange(user::LoginStatus login_status) {
     (*it)->UpdateAfterLoginStatusChange(login_status);
   }
 
+  // Items default to SHELF_ALIGNMENT_BOTTOM. Update them if the initial
+  // position of the shelf differs.
+  if (shelf_alignment() != SHELF_ALIGNMENT_BOTTOM)
+    UpdateAfterShelfAlignmentChange(shelf_alignment());
+
   SetVisible(true);
   PreferredSizeChanged();
 }