[cros] Captive portal dialog fixes.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
index ef384de9c236d68f0cd6d7ccf4a6331cd5dc1dbf..c4e3e606be4717d66f9146772607395c90474bcd 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
@@ -442,6 +442,9 @@ void SigninScreenHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback("fixCaptivePortal",
       base::Bind(&SigninScreenHandler::HandleFixCaptivePortal,
                  base::Unretained(this)));
+  web_ui()->RegisterMessageCallback("showCaptivePortal",
+        base::Bind(&SigninScreenHandler::HandleShowCaptivePortal,
+                 base::Unretained(this)));
   web_ui()->RegisterMessageCallback("hideCaptivePortal",
       base::Bind(&SigninScreenHandler::HandleHideCaptivePortal,
                  base::Unretained(this)));
@@ -733,6 +736,13 @@ void SigninScreenHandler::HandleFixCaptivePortal(const base::ListValue* args) {
   captive_portal_window_proxy_->ShowIfRedirected();
 }
 
+void SigninScreenHandler::HandleShowCaptivePortal(const base::ListValue* args) {
+  // This call is an explicit user action
+  // i.e. clicking on link so force dialog show.
+  HandleFixCaptivePortal(args);
+  captive_portal_window_proxy_->Show();
+}
+
 void SigninScreenHandler::HandleHideCaptivePortal(const base::ListValue* args) {
   if (captive_portal_window_proxy_.get())
     captive_portal_window_proxy_->Close();