[ash-md] Adds Wi-Fi header row to system tray network detailed view

ui/chromeos/network/network_list_delegate.h

Index: ui/chromeos/network/network_list_delegate.h
diff --git a/ui/chromeos/network/network_list_delegate.h b/ui/chromeos/network/network_list_delegate.h
index 3e62ed3366e432401110466b23c118cf26383818..bd54c07be47047b4604da59d846536c529253dfe 100644
--- a/ui/chromeos/network/network_list_delegate.h
+++ b/ui/chromeos/network/network_list_delegate.h
@@ -47,6 +47,9 @@ class UI_CHROMEOS_EXPORT NetworkListDelegate {
   // Called when the user clicks on an entry representing a network in the list.
   virtual void OnNetworkEntryClicked(views::View* sender) = 0;
 
+  // Called when the user clicks on a "Join Other" button.
+  virtual void OnOtherWifiClicked() = 0;
+
   virtual void RelayoutScrollList() = 0;
 };