align shipping option name to left and shipping cost to right on bottom sheet

chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestTestRule.java

 // 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.
 
 package org.chromium.chrome.browser.payments;
 
 import android.view.View;
 
 import org.junit.runner.Description;
 import org.junit.runners.model.Statement;
@@ skipping 256 matching lines @@
         return mTestCommon.getShippingAddressSummary();
     }
 
     /**
      *  Returns the summary text of the shipping option section.
      */
     protected String getShippingOptionSummaryLabel() throws ExecutionException {
         return mTestCommon.getShippingOptionSummary();
     }
 
+    /**
+     *  Returns the cost text of the shipping option section on the bottom sheet.
+     */
+    protected String getShippingOptionCostSummaryLabelOnBottomSheet() throws ExecutionException {
+        return mTestCommon.getShippingOptionCostSummaryOnBottomSheet();
+    }
+
     /** Returns the focused view in the card editor view. */
     protected View getCardEditorFocusedView() {
         return mTestCommon.getCardEditorFocusedView();
     }
 
     /**
      *  Clicks on the label corresponding to the shipping address suggestion at the specified
      *  |suggestionIndex|.
      * @throws InterruptedException
      */
@@ skipping 260 matching lines @@
                 base.evaluate();
             }
         }, description);
     }
 
     public interface MainActivityStartCallback {
         void onMainActivityStarted() throws
                 InterruptedException, ExecutionException, TimeoutException;
     }
 }