Remove NetworkListDelegate

ash/system/network/network_list_view_base.cc

Index: ash/system/network/network_list_view_base.cc
diff --git a/ash/system/network/network_list_view_base.cc b/ash/system/network/network_list_view_base.cc
index a20383b303ea52e17ac3985bb5b1a09c90d97b77..c4b611a7c6a2397b47ddf017f9b9896ec95d1e45 100644
--- a/ash/system/network/network_list_view_base.cc
+++ b/ash/system/network/network_list_view_base.cc
@@ -4,9 +4,15 @@
 
 #include "ash/system/network/network_list_view_base.h"
 
+#include "base/logging.h"
+
 namespace ash {
 
-NetworkListViewBase::NetworkListViewBase() {}
+NetworkListViewBase::NetworkListViewBase(
+    tray::NetworkStateListDetailedView* detailed_view)
+    : detailed_view_(detailed_view) {
+  DCHECK(detailed_view_);
+}
 
 NetworkListViewBase::~NetworkListViewBase() {}