enable modifiers for native apps

chrome/android/java/src/org/chromium/chrome/browser/payments/ui/PaymentRequestUI.java

 // Copyright 2016 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.
 
 package org.chromium.chrome.browser.payments.ui;
 
 import static org.chromium.chrome.browser.payments.ui.PaymentRequestSection.EDIT_BUTTON_GONE;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ skipping 1342 matching lines @@
     public Dialog getDialogForTest() {
         return mDialog;
     }
 
     @VisibleForTesting
     public PaymentRequestSection getShippingSummarySectionForTest() {
         return mShippingSummarySection;
     }
 
     @VisibleForTesting
+    public TextView getOrderSummaryTotalTextViewForTest() {
+        return mOrderSummarySection.getSummaryRightTextView();
+    }
+
+    @VisibleForTesting
     public ViewGroup getShippingAddressSectionForTest() {
         return mShippingAddressSection;
     }
 
     @VisibleForTesting
     public ViewGroup getPaymentMethodSectionForTest() {
         return mPaymentMethodSection;
     }
 
     @VisibleForTesting
     public PaymentRequestSection getContactDetailsSectionForTest() {
         return mContactDetailsSection;
     }
 
     private void notifyReadyForInput() {
         if (sObserverForTest != null && isAcceptingUserInput()) {
             sObserverForTest.onPaymentRequestReadyForInput(this);
         }
     }
 
     private void notifySelectionChecked() {
         if (sObserverForTest != null) {
             sObserverForTest.onPaymentRequestSelectionChecked(this);
         }
     }
 }