[M-56] Define helper constant in payment tests.

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

Index: chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestBillingAddressTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestBillingAddressTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestBillingAddressTest.java
index 7b5fedb1f9555676f013bbd7a30253b2043bd95a..c647a5d93b5f2adecb331f70c7f5ba3243aff317 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestBillingAddressTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestBillingAddressTest.java
@@ -19,6 +19,10 @@ import java.util.concurrent.TimeoutException;
  * A payment integration test for biling addresses.
  */
 public class PaymentRequestBillingAddressTest extends PaymentRequestTestBase {
+    private static final int DECEMBER = 11;
+    private static final int NEXT_YEAR = 1;
+    private static final int FIRST_BILLING_ADDRESS = 0;
+
     /*
      * The index at which the option to add a billing address is located in the billing address
      * selection dropdown.