cros: Fix keyboard navigation focus get lost when system tray set to invisible on oobe

chrome/browser/chromeos/login/ui/webui_login_view.cc

Index: chrome/browser/chromeos/login/ui/webui_login_view.cc
diff --git a/chrome/browser/chromeos/login/ui/webui_login_view.cc b/chrome/browser/chromeos/login/ui/webui_login_view.cc
index 7e964d5b00d5ad5e564beede82c451cfa197512c..43aaf86e0cd19b39903dd4eb1d3a2a99eabc8945 100644
--- a/chrome/browser/chromeos/login/ui/webui_login_view.cc
+++ b/chrome/browser/chromeos/login/ui/webui_login_view.cc
@@ -458,10 +458,12 @@ bool WebUILoginView::TakeFocus(content::WebContents* source, bool reverse) {
     return true;
 
   ash::SystemTray* tray = ash::Shell::GetInstance()->GetPrimarySystemTray();
-  if (tray && tray->GetWidget()->IsVisible()) {
+  if (tray && tray->GetWidget()->IsVisible() && tray->visible()) {
     tray->SetNextFocusableView(this);
     ash::Shell::Get()->focus_cycler()->RotateFocus(
         reverse ? ash::FocusCycler::BACKWARD : ash::FocusCycler::FORWARD);
+  } else {
+    AboutToRequestFocusFromTabTraversal(reverse);
   }
 
   return true;