Call RequestScan periodically while the network list is open

ash/system/chromeos/network/network_state_list_detailed_view.h

Index: ash/system/chromeos/network/network_state_list_detailed_view.h
diff --git a/ash/system/chromeos/network/network_state_list_detailed_view.h b/ash/system/chromeos/network/network_state_list_detailed_view.h
index 212f699afc046cd61ffdebf460c52a2cc3a2f704..0061f4f39e84ff012a1cc9971433ae4acc4c023b 100644
--- a/ash/system/chromeos/network/network_state_list_detailed_view.h
+++ b/ash/system/chromeos/network/network_state_list_detailed_view.h
@@ -15,6 +15,7 @@
 #include "ash/system/tray/view_click_listener.h"
 #include "ash/system/user/login_status.h"
 #include "base/memory/scoped_vector.h"
+#include "base/memory/weak_ptr.h"
 #include "ui/views/controls/button/button.h"
 
 namespace chromeos {
@@ -38,10 +39,12 @@ namespace tray {
 
 struct NetworkInfo;
 
-class NetworkStateListDetailedView : public NetworkDetailedView,
-                                     public views::ButtonListener,
-                                     public ViewClickListener,
-                                     public network_icon::AnimationObserver {
+class NetworkStateListDetailedView
+    : public NetworkDetailedView,
+      public views::ButtonListener,
+      public ViewClickListener,
+      public network_icon::AnimationObserver,
+      public base::SupportsWeakPtr<NetworkStateListDetailedView> {
  public:
   enum ListType {
     LIST_TYPE_NETWORK,
@@ -104,9 +107,12 @@ class NetworkStateListDetailedView : public NetworkDetailedView,
   bool ResetInfoBubble();
   views::View* CreateNetworkInfoView();
 
-  // Handle click (connect) action
+  // Handle click (connect) action.
   void ConnectToNetwork(const std::string& service_path);
 
+  // Periodically request a network scan.
+  void CallRequestScan();
+
   // Type of list (all networks or vpn)
   ListType list_type_;