[Payment Request] Payment request summary view pending state

ios/chrome/browser/payments/shipping_option_selection_view_controller.mm

 // 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.
 
 #import "ios/chrome/browser/payments/shipping_option_selection_view_controller.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/payments/currency_formatter.h"
@@ skipping 49 matching lines @@
   CollectionViewTextItem* _selectedItem;
 }
 
 // Called when the user presses the return button.
 - (void)onReturn;
 
 @end
 
 @implementation ShippingOptionSelectionViewController
 
-@synthesize isLoading = _isLoading;
+@synthesize pending = _pending;
 @synthesize errorMessage = _errorMessage;
 
 - (instancetype)initWithPaymentRequest:(PaymentRequest*)paymentRequest {
   DCHECK(paymentRequest);
   if ((self = [super initWithStyle:CollectionViewControllerStyleAppBar])) {
     self.title =
         payment_request_util::GetShippingOptionSelectorTitle(paymentRequest);
 
     UIBarButtonItem* returnButton =
         [ChromeIcon templateBarButtonItemWithImage:[ChromeIcon backIcon]
@@ skipping 22 matching lines @@
 
 #pragma mark - CollectionViewController methods
 
 - (void)loadModel {
   [super loadModel];
   CollectionViewModel* model = self.collectionViewModel;
   _selectedItem = nil;
 
   [model addSectionWithIdentifier:SectionIdentifierShippingOption];
 
-  if (self.isLoading) {
+  if (self.pending) {
     StatusItem* statusItem = [[StatusItem alloc] initWithType:ItemTypeSpinner];
     statusItem.text =
         l10n_util::GetNSString(IDS_IOS_PAYMENT_REQUEST_CHECKING_LABEL);
     [model addItem:statusItem
         toSectionWithIdentifier:SectionIdentifierShippingOption];
     return;
   }
 
   if (_errorMessage) {
     PaymentsTextItem* messageItem =
@@ skipping 123 matching lines @@
     hidesInkViewAtIndexPath:(NSIndexPath*)indexPath {
   NSInteger type = [self.collectionViewModel itemTypeForIndexPath:indexPath];
   if (type == ItemTypeMessage) {
     return YES;
   } else {
     return NO;
   }
 }
 
 @end