Added in-session captive portal notification.

chrome/browser/chromeos/net/network_portal_detector_impl.h

Index: chrome/browser/chromeos/net/network_portal_detector_impl.h
diff --git a/chrome/browser/chromeos/net/network_portal_detector_impl.h b/chrome/browser/chromeos/net/network_portal_detector_impl.h
index 642c67e8dd8f66927e49431ec4725ecb583ef9ba..f94aeeca1385d9b127093ad175727d42320be8a3 100644
--- a/chrome/browser/chromeos/net/network_portal_detector_impl.h
+++ b/chrome/browser/chromeos/net/network_portal_detector_impl.h
@@ -19,6 +19,7 @@
 #include "base/time/time.h"
 #include "chrome/browser/captive_portal/captive_portal_detector.h"
 #include "chrome/browser/chromeos/net/network_portal_detector.h"
+#include "chrome/browser/chromeos/net/network_portal_detector_notification.h"
 #include "chromeos/network/network_state_handler_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
@@ -259,6 +260,9 @@ class NetworkPortalDetectorImpl
   // True if |request_timeout_for_testing_| is initialized.
   bool request_timeout_for_testing_initialized_;
 
+  // UI notification about captive portal state.
+  NetworkPortalDetectorNotification notification_;
+
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkPortalDetectorImpl);