[Payments] Add metrics for Payment Request aborts.

chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestMetrics.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 org.chromium.base.VisibleForTesting;
 import org.chromium.base.metrics.RecordHistogram;
 
 /**
  * A class used to record metrics for the Payment Request feature.
  */
 public final class PaymentRequestMetrics {
 
     // PaymentRequestRequestedInformation defined in tools/metrics/histograms/histograms.xml.
     @VisibleForTesting
     public static final int REQUESTED_INFORMATION_NONE = 0;
     @VisibleForTesting
     public static final int REQUESTED_INFORMATION_EMAIL = 1 << 0;
     @VisibleForTesting
     public static final int REQUESTED_INFORMATION_PHONE = 1 << 1;
     @VisibleForTesting
     public static final int REQUESTED_INFORMATION_SHIPPING = 1 << 2;
     @VisibleForTesting
     public static final int REQUESTED_INFORMATION_MAX = 8;
 
+    // PaymentRequestAbortReason defined in tools/metrics/histograms/histograms.xml.
+    @VisibleForTesting
+    public static final int ABORT_REASON_ABORTED_BY_USER = 0;
+    @VisibleForTesting
+    public static final int ABORT_REASON_ABORTED_BY_MERCHANT = 1;
+    @VisibleForTesting
+    public static final int ABORT_REASON_INVALID_DATA_FROM_RENDERER = 2;
+    @VisibleForTesting
+    public static final int ABORT_REASON_MOJO_CONNECTION_ERROR = 3;
+    @VisibleForTesting
+    public static final int ABORT_REASON_MOJO_RENDERER_CLOSING = 4;
+    @VisibleForTesting
+    public static final int ABORT_REASON_INSTRUMENT_DETAILS_ERROR = 5;
+    @VisibleForTesting
+    public static final int ABORT_REASON_NO_MATCHING_PAYMENT_METHOD = 6;
+    @VisibleForTesting
+    public static final int ABORT_REASON_NO_SUPPORTED_PAYMENT_METHOD = 7;
+    @VisibleForTesting
+    public static final int ABORT_REASON_OTHER = 8;
+    @VisibleForTesting
+    public static final int ABORT_REASON_MAX = 9;
+
     // There should be no instance of PaymentRequestMetrics created.
     private PaymentRequestMetrics() {}
 
     /*
      * Records the metric that keeps track of what user information are requested by merchants to
      * complete a payment request.
      *
      * @param requestEmail Whether the merchant requested an email address.
      * @param requestPhone Whether the merchant requested a phone number.
      * @param requestShipping Whether the merchant requested a shipping address.
      */
     public static void recordRequestedInformationHistogram(boolean requestEmail,
             boolean requestPhone, boolean requestShipping) {
         int requestInformation =
                 (requestEmail ? REQUESTED_INFORMATION_EMAIL : 0)
                 | (requestPhone ? REQUESTED_INFORMATION_PHONE : 0)
                 | (requestShipping ? REQUESTED_INFORMATION_SHIPPING : 0);
         RecordHistogram.recordEnumeratedHistogram("PaymentRequest.RequestedInformation",
                 requestInformation, REQUESTED_INFORMATION_MAX);
     }
 }