Mark flaky chrome_public tests with @RetryOnFailure Batch 4

chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestEmailTest.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;
 
 import android.content.DialogInterface;
 import android.test.suitebuilder.annotation.MediumTest;
 
 import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.base.test.util.Feature;
+import org.chromium.base.test.util.RetryOnFailure;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.autofill.AutofillTestHelper;
 import org.chromium.chrome.browser.autofill.PersonalDataManager.AutofillProfile;
 import org.chromium.chrome.browser.autofill.PersonalDataManager.CreditCard;
 
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeoutException;
 
 /**
  * A payment integration test for a merchant that requests email address.
  */
+@RetryOnFailure
 public class PaymentRequestEmailTest extends PaymentRequestTestBase {
     public PaymentRequestEmailTest() {
         // This merchant request an email address.
         super("payment_request_email_test.html");
     }
 
     @Override
     public void onMainActivityStarted()
             throws InterruptedException, ExecutionException, TimeoutException {
         AutofillTestHelper helper = new AutofillTestHelper();
@@ skipping 60 matching lines @@
         triggerUIAndWait(mReadyToPay);
 
         // Make sure that only the appropriate enum value was logged.
         for (int i = 0; i < PaymentRequestMetrics.REQUESTED_INFORMATION_MAX; ++i) {
             assertEquals((i == PaymentRequestMetrics.REQUESTED_INFORMATION_EMAIL ? 1 : 0),
                     RecordHistogram.getHistogramValueCountForTesting(
                             "PaymentRequest.RequestedInformation", i));
         }
     }
 }