Hide PaymentRequest UI spinner during CVC unmask

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 360ab4ad67ee38eef702f31cb2ffa1f82a82e97e..88e1d6f88f7d87ffdce13a44a6b4f640cf50c96b 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
@@ -692,13 +692,14 @@ public class PaymentRequestImpl implements PaymentRequest, PaymentRequestUI.Clie
     }
 
     @Override
-    public void onPayClicked(PaymentOption selectedShippingAddress,
+    public boolean onPayClicked(PaymentOption selectedShippingAddress,
             PaymentOption selectedShippingOption, PaymentOption selectedPaymentMethod) {
         assert selectedPaymentMethod instanceof PaymentInstrument;
         PaymentInstrument instrument = (PaymentInstrument) selectedPaymentMethod;
         mPaymentAppRunning = true;
         instrument.getDetails(mMerchantName, mOrigin, mRawTotal, mRawLineItems,
                 mMethodData.get(instrument.getMethodName()), this);
+        return !(instrument instanceof AutofillPaymentInstrument);
     }
 
     @Override
@@ -816,6 +817,7 @@ public class PaymentRequestImpl implements PaymentRequest, PaymentRequestUI.Clie
             }
         }
 
+        mUI.showProcessingMessage();
         mClient.onPaymentResponse(response);
     }