Revert of Make TrayDetailsView a ViewClickListener and ButtonListener

ash/common/system/chromeos/network/vpn_list_view.cc

Index: ash/common/system/chromeos/network/vpn_list_view.cc
diff --git a/ash/common/system/chromeos/network/vpn_list_view.cc b/ash/common/system/chromeos/network/vpn_list_view.cc
index 3c3ed57ebe34756f20c95ba5d32c269b387a8e43..45c30080bc2ae052133c58015dac84eac46fe41b 100644
--- a/ash/common/system/chromeos/network/vpn_list_view.cc
+++ b/ash/common/system/chromeos/network/vpn_list_view.cc
@@ -353,7 +353,7 @@
   // If the user clicked on a network entry, let the |delegate_| trigger a
   // connection attempt (if the network is currently disconnected) or show a
   // configuration dialog (if the network is currently connected or connecting).
-  delegate_->OnNetworkEntryClicked(sender);
+  delegate_->OnViewClicked(sender);
 }
 
 void VPNListView::AddNetwork(const chromeos::NetworkState* network) {