Insufficient information on activation details should be handled correctly.

chrome/browser/ui/webui/options/chromeos/internet_options_handler.cc

 // 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/ui/webui/options/chromeos/internet_options_handler.h"
 
 #include <ctype.h>
 
 #include <map>
 #include <string>
@@ skipping 1761 matching lines @@
       }
     }
   }
 
   // Set Cellular Buttons Visibility
   dictionary->SetBoolean(
       kTagDisableConnectButton,
       cellular->activation_state() == flimflam::kActivationStateActivating ||
       cellular->IsConnectingState());
 
+  // Don't show any account management related buttons if the activation
+  // state is unknown or no payment portal URL is available.
+  std::string support_url;
+  if (cellular->activation_state() == flimflam::kActivationStateUnknown ||
+      !dictionary->GetString(kTagSupportUrl, &support_url) ||
+      support_url.empty()) {
+    VLOG(2) << "No support URL is available. Don't display buttons.";
+    return;
+  }
+
   if (cellular->activation_state() != flimflam::kActivationStateActivating &&
       cellular->activation_state() != flimflam::kActivationStateActivated) {
     dictionary->SetBoolean(kTagShowActivateButton, true);
   } else {
     const MobileConfig::Carrier* carrier =
         MobileConfig::GetInstance()->GetCarrier(carrier_id);
     if (carrier && carrier->show_portal_button()) {
       // The button should be shown for a LTE network even when the LTE network
       // is not connected, but CrOS is online. This is done to enable users to
       // update their plan even if they are out of credits.
@@ skipping 184 matching lines @@
       cellular && cellular->support_network_scan());
 
   dictionary->SetBoolean(kTagWimaxAvailable,
                          handler->IsTechnologyAvailable(flimflam::kTypeWimax));
   dictionary->SetBoolean(kTagWimaxEnabled,
                          handler->IsTechnologyEnabled(flimflam::kTypeWimax));
 }
 
 }  // namespace options
 }  // namespace chromeos