chrome://supervised-user-internals: handle null AccountTrackerService

chrome/browser/ui/webui/supervised_user_internals_message_handler.cc

 // Copyright 2015 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/supervised_user_internals_message_handler.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/macros.h"
@@ skipping 248 matching lines @@
   base::ListValue* section_filter = AddSection(section_list.get(), "Filter");
   AddSectionEntry(section_filter, "Blacklist active", filter->HasBlacklist());
   AddSectionEntry(section_filter, "Online checks active",
                   filter->HasAsyncURLChecker());
   AddSectionEntry(section_filter, "Default behavior",
                   FilteringBehaviorToString(
                       filter->GetDefaultFilteringBehavior()));
 
   AccountTrackerService* account_tracker =
       AccountTrackerServiceFactory::GetForProfile(profile);
-
-  for (const auto& account: account_tracker->GetAccounts()) {
-    base::ListValue* section_user = AddSection(section_list.get(),
-        "User Information for " + account.full_name);
-    AddSectionEntry(section_user, "Account id", account.account_id);
-    AddSectionEntry(section_user, "Gaia", account.gaia);
-    AddSectionEntry(section_user, "Email", account.email);
-    AddSectionEntry(section_user, "Given name", account.given_name);
-    AddSectionEntry(section_user, "Hosted domain", account.hosted_domain);
-    AddSectionEntry(section_user, "Locale", account.locale);
-    AddSectionEntry(section_user, "Is child", account.is_child_account);
-    AddSectionEntry(section_user, "Is valid", account.IsValid());
+  // |account_tracker| is null in incognito and guest profiles.
+  if (account_tracker) {
+    for (const auto& account: account_tracker->GetAccounts()) {
+      base::ListValue* section_user = AddSection(section_list.get(),
+          "User Information for " + account.full_name);
+      AddSectionEntry(section_user, "Account id", account.account_id);
+      AddSectionEntry(section_user, "Gaia", account.gaia);
+      AddSectionEntry(section_user, "Email", account.email);
+      AddSectionEntry(section_user, "Given name", account.given_name);
+      AddSectionEntry(section_user, "Hosted domain", account.hosted_domain);
+      AddSectionEntry(section_user, "Locale", account.locale);
+      AddSectionEntry(section_user, "Is child", account.is_child_account);
+      AddSectionEntry(section_user, "Is valid", account.IsValid());
+    }
   }
 
   base::DictionaryValue result;
   result.Set("sections", std::move(section_list));
   web_ui()->CallJavascriptFunction(
       "chrome.supervised_user_internals.receiveBasicInfo", result);
 
   // Trigger retrieval of the user settings
   SupervisedUserSettingsService* settings_service =
       SupervisedUserSettingsServiceFactory::GetForProfile(profile);
@@ skipping 37 matching lines @@
     supervised_user_error_page::FilteringBehaviorReason reason,
     bool uncertain) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   base::DictionaryValue result;
   result.SetString("url", url.possibly_invalid_spec());
   result.SetString("result", FilteringBehaviorToString(behavior, uncertain));
   result.SetString("reason", FilteringBehaviorReasonToString(reason));
   web_ui()->CallJavascriptFunction(
       "chrome.supervised_user_internals.receiveFilteringResult", result);
 }