ChromeOS: Implement CaptivePortalAuthenticationIgnoresProxy policy.

chrome/browser/chromeos/net/network_portal_notification_controller.h

Index: chrome/browser/chromeos/net/network_portal_notification_controller.h
diff --git a/chrome/browser/chromeos/net/network_portal_notification_controller.h b/chrome/browser/chromeos/net/network_portal_notification_controller.h
index 1d279af90f09185193793ab7f505cbd1d043f291..9e4eb8c1a5ff32e374d0e6a0eafc98e149aa3517 100644
--- a/chrome/browser/chromeos/net/network_portal_notification_controller.h
+++ b/chrome/browser/chromeos/net/network_portal_notification_controller.h
@@ -56,6 +56,13 @@ class NetworkPortalNotificationController
   // NULLifies reference to the active dialog.
   void OnDialogDestroyed(const NetworkPortalWebDialog* dialog);
 
+  // Ignores "No network" errors in browser tests.
+  void SetIgnoreNoNetworkForTesting();
+
+  // Browser tests should be able to verify that NetworkPortalWebDialog is
+  // shown.
+  const NetworkPortalWebDialog* GetDialogForTesting() const;
+
  private:
   // Last network path for which notification was displayed.
   std::string last_network_path_;
@@ -63,6 +70,9 @@ class NetworkPortalNotificationController
   // Currently displayed authorization dialog, or NULL if none.
   NetworkPortalWebDialog* dialog_;
 
+  // Do not close Portal Login dialog on "No network" error in browser tests.
+  bool ignore_no_network_for_testing_;
+
   DISALLOW_COPY_AND_ASSIGN(NetworkPortalNotificationController);
 };