Open a login tab on captive portal detection on SSL loads.

chrome/browser/captive_portal/captive_portal_login_detector.cc

Index: chrome/browser/captive_portal/captive_portal_login_detector.cc
===================================================================
--- chrome/browser/captive_portal/captive_portal_login_detector.cc	(revision 0)
+++ chrome/browser/captive_portal/captive_portal_login_detector.cc	(revision 0)
@@ -0,0 +1,35 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/captive_portal/captive_portal_login_detector.h"
+
+#include "chrome/browser/captive_portal/captive_portal_service_factory.h"
+
+namespace captive_portal {
+
+CaptivePortalLoginDetector::CaptivePortalLoginDetector(
+    Profile* profile)
+    : profile_(profile),
+      is_login_tab_(false) {
+}
+
+CaptivePortalLoginDetector::~CaptivePortalLoginDetector() {
+}
+
+void CaptivePortalLoginDetector::OnStoppedLoading() {
+  if (!is_login_tab_)
+    return;
+  // The service is guaranteed to exist if |is_login_tab_| is true, since it's
+  // only set to true once a captive portal is detected.
+  CaptivePortalServiceFactory::GetForProfile(profile_)->DetectCaptivePortal();
+}
+
+void CaptivePortalLoginDetector::OnCaptivePortalResults(
+    Result previous_result,
+    Result result) {
+  if (result != RESULT_BEHIND_CAPTIVE_PORTAL)
+    is_login_tab_ = false;
+}
+
+}  // namespace captive_portal