[Payments] Field trial and flag to abort payment request if no card.

chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java

Index: chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java
index 44bc75d4b1ef2bfa34541677372ae808c686100a..91306539fe4896bcdcb8ce28b1dc0f133791379f 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentRequestImpl.java
@@ -394,6 +394,19 @@ public class PaymentRequestImpl implements PaymentRequest, PaymentRequestUI.Clie
     public void show() {
         if (mClient == null || mIsShowing) return;
 
+
+        if (NoCardAbortFieldTrial.isEnabled()
+                && PersonalDataManager.getInstance().getCreditCardsToSuggest().size() == 0) {
+            // Cancel the payment request if the user has no credit card.
+            disconnectFromClientWithDebugMessage(
+                    "User has no credit card", PaymentErrorReason.NOT_SUPPORTED);
+            recordAbortReasonHistogram(
+                    PaymentRequestMetrics.ABORT_REASON_NO_MATCHING_PAYMENT_METHOD);
+            if (sObserverForTest != null) sObserverForTest.onPaymentRequestServiceShowFailed();
+
+            return;
+        }
+
         mIsShowing = true;
         if (disconnectIfNoPaymentMethodsSupported()) return;