PaymentApp: Allow multiple payment method names for one instrument.

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

Index: chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestTestBase.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestTestBase.java b/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestTestBase.java
index 2446e9aefe3f7138839fbab1a7620311b569c347..a4c8d6450f2f42e57e8cf436e7568e599753cec1 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestTestBase.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/payments/PaymentRequestTestBase.java
@@ -807,13 +807,15 @@ abstract class PaymentRequestTestBase extends ChromeActivityTestCaseBase<ChromeT
         }
 
         @Override
-        public String getInstrumentMethodName() {
-            return mMethodName;
+        public Set<String> getInstrumentMethodNames() {
+            Set<String> result = new HashSet<>();
+            result.add(mMethodName);
+            return result;
         }
 
         @Override
-        public void getInstrumentDetails(String merchantName, String origin, PaymentItem total,
-                List<PaymentItem> cart, PaymentMethodData details,
+        public void invokePayment(String merchantName, String origin, PaymentItem total,
+                List<PaymentItem> cart, Map<String, PaymentMethodData> methodData,
                 InstrumentDetailsCallback detailsCallback) {
             detailsCallback.onInstrumentDetailsReady(
                     mMethodName, "{\"transaction\": 1337}");