Convert all connect code to use NetworkHandler instead of NetworkLibrary

ash/system/chromeos/network/network_state_list_detailed_view.cc

Index: ash/system/chromeos/network/network_state_list_detailed_view.cc
diff --git a/ash/system/chromeos/network/network_state_list_detailed_view.cc b/ash/system/chromeos/network/network_state_list_detailed_view.cc
index abc888a5c39a7c526b4be4fd5f120f580e08f37a..64e6d3bc3ffd3ae4a2a2e310efd0efb3ded179ae 100644
--- a/ash/system/chromeos/network/network_state_list_detailed_view.cc
+++ b/ash/system/chromeos/network/network_state_list_detailed_view.cc
@@ -315,12 +315,8 @@ void NetworkStateListDetailedView::OnViewClicked(views::View* sender) {
   if (!network || network->IsConnectedState() || network->IsConnectingState()) {
     Shell::GetInstance()->system_tray_delegate()->ShowNetworkSettings(
         service_path);
-  } else if (CommandLine::ForCurrentProcess()->HasSwitch(
-      chromeos::switches::kUseNewNetworkConnectionHandler)) {
-    ash::network_connect::ConnectToNetwork(service_path);
   } else {
-    Shell::GetInstance()->system_tray_delegate()->ConnectToNetwork(
-        service_path);
+    ash::network_connect::ConnectToNetwork(service_path, NULL);
   }
 }