[Payments] Use C++ metric enums in Java.

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

Index: chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestEmailTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestEmailTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestEmailTest.java
index a911019ccbccf0f657092218bf6977cbf06e97ad..de6b8cfb45c41be2b89fec653f86731ebbc0b0d6 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestEmailTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestEmailTest.java
@@ -155,8 +155,8 @@ public class PaymentRequestEmailTest implements MainActivityStartCallback {
         mPaymentRequestTestRule.triggerUIAndWait(mPaymentRequestTestRule.getReadyToPay());
 
         // Make sure that only the appropriate enum value was logged.
-        for (int i = 0; i < PaymentRequestMetrics.REQUESTED_INFORMATION_MAX; ++i) {
-            Assert.assertEquals((i == PaymentRequestMetrics.REQUESTED_INFORMATION_EMAIL ? 1 : 0),
+        for (int i = 0; i < RequestedInformation.MAX; ++i) {
+            Assert.assertEquals((i == RequestedInformation.EMAIL ? 1 : 0),
                     RecordHistogram.getHistogramValueCountForTesting(
                             "PaymentRequest.RequestedInformation", i));
         }