Force a rescan when opening the Wifi menu on the settings page.

chrome/browser/ui/webui/options2/chromeos/internet_options_handler2.cc

Index: chrome/browser/ui/webui/options2/chromeos/internet_options_handler2.cc
diff --git a/chrome/browser/ui/webui/options2/chromeos/internet_options_handler2.cc b/chrome/browser/ui/webui/options2/chromeos/internet_options_handler2.cc
index 54b82b5bc0cedbed1d100872bb1a23ca9309fb03..a39189439c8724241f56a62f8d681fd0db1f9351 100644
--- a/chrome/browser/ui/webui/options2/chromeos/internet_options_handler2.cc
+++ b/chrome/browser/ui/webui/options2/chromeos/internet_options_handler2.cc
@@ -433,6 +433,9 @@ void InternetOptionsHandler::InitializePage() {
 
 void InternetOptionsHandler::RegisterMessages() {
   // Setup handlers specific to this panel.
+  web_ui()->RegisterMessageCallback("refreshNetworks",
+      base::Bind(&InternetOptionsHandler::RefreshNetworksCallback,
+                 base::Unretained(this)));
   web_ui()->RegisterMessageCallback("buttonClickCallback",
       base::Bind(&InternetOptionsHandler::ButtonClickCallback,
                  base::Unretained(this)));
@@ -576,6 +579,10 @@ void InternetOptionsHandler::ChangePinCallback(const ListValue* args) {
       chromeos::SimDialogDelegate::SIM_DIALOG_CHANGE_PIN);
 }
 
+void InternetOptionsHandler::RefreshNetworksCallback(const ListValue* args) {
+  cros_->RequestNetworkScan();
+}
+
 void InternetOptionsHandler::RefreshNetworkData() {
   DictionaryValue dictionary;
   FillNetworkInfo(&dictionary);