ash: Long network names should not overlap with the chevron in the uber tray.

ash/system/tray_update.cc

Index: ash/system/tray_update.cc
diff --git a/ash/system/tray_update.cc b/ash/system/tray_update.cc
index 315f1ce9b8096b02c15ffe0647670b63b5729d38..82bef417b78b2b41959975fe7ccd055b2c369980 100644
--- a/ash/system/tray_update.cc
+++ b/ash/system/tray_update.cc
@@ -66,6 +66,8 @@ bool TrayUpdate::GetInitialVisibility() {
 }
 
 views::View* TrayUpdate::CreateDefaultView(user::LoginStatus status) {
+  if (!Shell::GetInstance()->tray_delegate()->SystemShouldUpgrade())
+    return NULL;
   default_.reset(new UpdateView);
   return default_.get();
 }