Hide Wallet checkbox when user signs out of sync.

chrome/browser/ui/webui/options/autofill_options_handler.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS_AUTOFILL_OPTIONS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_AUTOFILL_OPTIONS_HANDLER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
+#include "chrome/browser/sync/profile_sync_service.h"
+#include "chrome/browser/sync/profile_sync_service_observer.h"
 #include "chrome/browser/ui/webui/options/options_ui.h"
 #include "components/autofill/core/browser/personal_data_manager_observer.h"
 
 namespace autofill {
 class AutofillProfile;
 class PersonalDataManager;
 }  // namespace autofill
 
 namespace base {
 class DictionaryValue;
 class ListValue;
 }
 
 namespace options {
 
 class AutofillOptionsHandler : public OptionsPageUIHandler,
-                               public autofill::PersonalDataManagerObserver {
+                               public autofill::PersonalDataManagerObserver,
+                               public ProfileSyncServiceObserver {
  public:
   AutofillOptionsHandler();
   ~AutofillOptionsHandler() override;
 
   // OptionsPageUIHandler implementation.
   void GetLocalizedValues(base::DictionaryValue* localized_strings) override;
   void InitializeHandler() override;
   void InitializePage() override;
   void RegisterMessages() override;
 
   // PersonalDataManagerObserver implementation.
   void OnPersonalDataChanged() override;
 
+  // ProfileSyncServiceObserver implementation.
+  void OnStateChanged() override;
+
  private:
   FRIEND_TEST_ALL_PREFIXES(AutofillOptionsHandlerTest, AddressToDictionary);
 
   // Loads the strings for the address and credit card overlays.
   void SetAddressOverlayStrings(base::DictionaryValue* localized_strings);
   void SetCreditCardOverlayStrings(base::DictionaryValue* localized_strings);
 
   // Loads Autofill addresses and credit cards using the PersonalDataManager.
   void LoadAutofillData();
 
@@ skipping 52 matching lines @@
 
   // Fills in |address| with the data format that the options js expects.
   static void AutofillProfileToDictionary(
       const autofill::AutofillProfile& profile,
       base::DictionaryValue* address);
 
   // The personal data manager, used to load Autofill profiles and credit cards.
   // Unowned pointer, may not be NULL.
   autofill::PersonalDataManager* personal_data_;
 
+  ScopedObserver<ProfileSyncService, ProfileSyncServiceBase::Observer>
+      observer_;
+
   DISALLOW_COPY_AND_ASSIGN(AutofillOptionsHandler);
 };
 
 }  // namespace options
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_AUTOFILL_OPTIONS_HANDLER_H_