[Payments] Update some editor titles to reflect missing information

chrome/browser/ui/views/payments/contact_info_editor_view_controller.cc

 // Copyright 2017 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/views/payments/contact_info_editor_view_controller.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/views/payments/validating_textfield.h"
 #include "components/autofill/core/browser/autofill_country.h"
 #include "components/autofill/core/browser/autofill_profile.h"
@@ skipping 85 matching lines @@
 }
 
 std::unique_ptr<ui::ComboboxModel>
 ContactInfoEditorViewController::GetComboboxModelForType(
     const autofill::ServerFieldType& type) {
   NOTREACHED();
   return nullptr;
 }
 
 base::string16 ContactInfoEditorViewController::GetSheetTitle() {
+  // TODO(crbug.com/712074): Title should reflect the missing information, if
+  // applicable.
   return profile_to_edit_ ? l10n_util::GetStringUTF16(
                                 IDS_PAYMENTS_EDIT_CONTACT_DETAILS_LABEL)
                           : l10n_util::GetStringUTF16(
                                 IDS_PAYMENTS_ADD_CONTACT_DETAILS_LABEL);
 }
 
 bool ContactInfoEditorViewController::ValidateModel() {
   for (const auto& field : text_fields()) {
     // Force a blur, as validation only occurs after the first blur.
     field.first->OnBlur();
@@ skipping 71 matching lines @@
 }
 
 bool ContactInfoEditorViewController::ContactInfoValidationDelegate::
     ValidateCombobox(views::Combobox* combobox) {
   // This UI doesn't contain any comboboxes.
   NOTREACHED();
   return true;
 }
 
 }  // namespace payments