Fix: Cursor missing in omnibox after entering a alphabet in NTP 'Search box'

ui/views/controls/textfield/textfield.h

Index: ui/views/controls/textfield/textfield.h
diff --git a/ui/views/controls/textfield/textfield.h b/ui/views/controls/textfield/textfield.h
index 4e4fc2e745e515deed03010cca672b16f6374313..857c97b65b1cbd3228689ee17a86d0a90a133bb5 100644
--- a/ui/views/controls/textfield/textfield.h
+++ b/ui/views/controls/textfield/textfield.h
@@ -370,6 +370,9 @@ class VIEWS_EXPORT Textfield : public View,
   // Does necessary updates when the text and/or cursor position changes.
   void UpdateAfterChange(bool text_changed, bool cursor_changed);
 
+  // Updates cursor visibility and blinks the cursor if needed.
+  void ShowCursor();
+
   // A callback function to periodically update the cursor node_data.
   void UpdateCursor();