[Payment Request] Selector view edit mode

ios/chrome/browser/ui/payments/payment_request_selector_view_controller_unittest.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/ui/payments/payment_request_selector_view_controller.h"
 
 #include "base/mac/foundation_util.h"
 #import "ios/chrome/browser/ui/autofill/cells/status_item.h"
 #import "ios/chrome/browser/ui/collection_view/collection_view_controller_test.h"
 #import "ios/chrome/browser/ui/payments/cells/payments_text_item.h"
@@ skipping 24 matching lines @@
   if (self) {
     _items =
         @[ [[PaymentsTextItem alloc] init], [[PaymentsTextItem alloc] init] ];
     _selectedItemIndex = 0;
   }
   return self;
 }
 
 #pragma mark - PaymentRequestSelectorViewControllerDataSource
 
+- (BOOL)allowsEditMode {
+  return NO;
+}
+
 - (CollectionViewItem*)headerItem {
   return [[CollectionViewItem alloc] init];
 }
 
 - (NSArray<CollectionViewItem*>*)selectableItems {
   return _items;
 }
 
 - (CollectionViewItem*)addButtonItem {
   return [[CollectionViewItem alloc] init];
@@ skipping 67 matching lines @@
   [GetPaymentRequestSelectorViewController() loadModel];
 
   ASSERT_EQ(1, NumberOfSections());
   // There should be only one item.
   ASSERT_EQ(1, NumberOfItemsInSection(0));
 
   // The item should be of type StatusItem.
   id item = GetCollectionViewItem(0, 0);
   EXPECT_TRUE([item isMemberOfClass:[StatusItem class]]);
 }