Dismiss editor UI when PaymentRequest is closing.

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 b6a653d633b412da13326e5482981ba776773abc..b7ac8800c60f73b2e145e0f881b38e025750654d 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
@@ -739,6 +739,8 @@ public class PaymentRequestImpl implements PaymentRequest, PaymentRequestUI.Clie
         mAddressEditor.edit(toEdit, new Callback<AutofillAddress>() {
             @Override
             public void onResult(AutofillAddress completeAddress) {
+                if (mUI == null) return;
+
                 if (completeAddress == null) {
                     mShippingAddressesSection.setSelectedItemIndex(SectionInformation.NO_SELECTION);
                 } else if (toEdit == null) {
@@ -764,6 +766,8 @@ public class PaymentRequestImpl implements PaymentRequest, PaymentRequestUI.Clie
         mContactEditor.edit(toEdit, new Callback<AutofillContact>() {
             @Override
             public void onResult(AutofillContact completeContact) {
+                if (mUI == null) return;
+
                 if (completeContact == null) {
                     mContactSection.setSelectedItemIndex(SectionInformation.NO_SELECTION);
                 } else if (toEdit == null) {
@@ -779,6 +783,8 @@ public class PaymentRequestImpl implements PaymentRequest, PaymentRequestUI.Clie
         mCardEditor.edit(toEdit, new Callback<AutofillPaymentInstrument>() {
             @Override
             public void onResult(AutofillPaymentInstrument completeCard) {
+                if (mUI == null) return;
+
                 if (completeCard == null) {
                     mPaymentMethodsSection.setSelectedItemIndex(SectionInformation.NO_SELECTION);
                 } else if (toEdit == null) {