[cros] Report captive portal message when we suspect that might be the case.

chrome/browser/chromeos/login/views_login_display.cc

Index: chrome/browser/chromeos/login/views_login_display.cc
diff --git a/chrome/browser/chromeos/login/views_login_display.cc b/chrome/browser/chromeos/login/views_login_display.cc
index b2ceb9079398b75633e7cfe9e30c854b320da137..553d1615b38ffb47e705a943ba4a8712d3e26c16 100644
--- a/chrome/browser/chromeos/login/views_login_display.cc
+++ b/chrome/browser/chromeos/login/views_login_display.cc
@@ -192,6 +192,7 @@ void ViewsLoginDisplay::ShowError(int error_msg_id,
                                   HelpAppLauncher::HelpTopic help_topic_id) {
   ClearErrors();
   string16 error_text;
+  error_msg_id_ = error_msg_id;
   help_topic_id_ = help_topic_id;
 
   // GetStringF fails on debug build if there's no replacement in the string.
@@ -214,8 +215,10 @@ void ViewsLoginDisplay::ShowError(int error_msg_id,
   }
 
   string16 help_link;
-  if (error_msg_id == IDS_LOGIN_ERROR_AUTHENTICATING_HOSTED ||
-      login_attempts > 1) {
+  if (error_msg_id == IDS_LOGIN_ERROR_CAPTIVE_PORTAL) {
+    help_link = l10n_util::GetStringUTF16(IDS_LOGIN_FIX_CAPTIVE_PORTAL);
+  } else if (error_msg_id == IDS_LOGIN_ERROR_AUTHENTICATING_HOSTED ||
+             login_attempts > 1) {
     help_link = l10n_util::GetStringUTF16(IDS_LEARN_MORE);
   }
 
@@ -287,6 +290,10 @@ void ViewsLoginDisplay::SelectUser(int index) {
 //
 
 void ViewsLoginDisplay::OnHelpLinkActivated() {
+  if (error_msg_id_ == IDS_LOGIN_ERROR_CAPTIVE_PORTAL) {
+    delegate()->FixCaptivePortal();
+    return;
+  }
   if (!parent_window())
     return;
   if (!help_app_.get())