[PRImpl] Clean-up MinimalUI refactoring

Change:
* Inline onMinimalUiDismissed() and onMinimalUiErroredAndClosed() as
they are just one-liners,

Bug: 1108099

Change-Id: I77097396926519566dd4e2ac778818f4d6ba990d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2404752
Commit-Queue: Liquan (Max) Gu <maxlg@chromium.org>
Reviewed-by: Sahel Sharify <sahel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#806661}

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

@@ -511,7 +511,7 @@ public class PaymentRequestImpl
             if (isMinimalUiApplicable()) {
                 if (mPaymentUIsManager.triggerMinimalUI(chromeActivity, mSpec.getRawTotal(),
                             this::onMinimalUIReady, this::onMinimalUiConfirmed,
-                        this::onMinimalUiDismissed)) {
+                            /*dismissObserver=*/this::onDismiss)) {
                     mDidRecordShowEvent = true;
                     mJourneyLogger.setEventOccurred(Event.SHOWN);
                 } else {
@@ -566,21 +566,14 @@ public class PaymentRequestImpl
         onPayClicked(null /* selectedShippingAddress */, null /* selectedShippingOption */, app);
     }
 
-    private void onMinimalUiDismissed() {
-        onDismiss();
-    }
-
-    private void onMinimalUiErroredAndClosed() {
-        close();
-    }
-
     private void onMinimalUiCompletedAndClosed() {
         if (mComponentPaymentRequestImpl == null) return;
         mComponentPaymentRequestImpl.onComplete();
         close();
     }
 
-    private void onPaymentRequestCompleteForNonMinimalUI() {
+    /** Called after the non-minimal UI has handled {@link #complete}. */
+    private void onNonMinimalUiHandledComplete() {
         if (ComponentPaymentRequestImpl.getNativeObserverForTest() != null) {
             ComponentPaymentRequestImpl.getNativeObserverForTest().onCompleteCalled();
         }
@@ -1220,8 +1213,9 @@ public class PaymentRequestImpl
                     mSpec.getRawTotal().amount.value, true /*completed*/);
         }
 
-        mPaymentUIsManager.onPaymentRequestComplete(result, this::onMinimalUiErroredAndClosed,
-                this::onMinimalUiCompletedAndClosed, this::onPaymentRequestCompleteForNonMinimalUI);
+        mPaymentUIsManager.onPaymentRequestComplete(result,
+                /*onMinimalUiErroredAndClosed=*/this::close, this::onMinimalUiCompletedAndClosed,
+                this::onNonMinimalUiHandledComplete);
     }
 
     // Implement BrowserPaymentRequest:
@@ -1768,7 +1762,7 @@ public class PaymentRequestImpl
         if (mPaymentUIsManager.getMinimalUI() != null) {
             mJourneyLogger.setAborted(AbortReason.ABORTED_BY_USER);
             mPaymentUIsManager.getMinimalUI().showErrorAndClose(
-                    this::onMinimalUiErroredAndClosed, R.string.payments_error_message);
+                    /*observer=*/this::close, R.string.payments_error_message);
             return;
         }
 

chrome/android/java/src/org/chromium/chrome/browser/payments/minimal/MinimalUICoordinator.java

@@ -155,16 +155,15 @@ public class MinimalUICoordinator {
     /**
      * Runs when the payment request is closed.
      * @param result The status of PaymentComplete.
-     * @param onMinimalUiErroredAndClosed The function called when MinimalUI errors and closes.
-     * @param onMinimalUiCompletedAndClosed The function called when MinimalUI completes and closes.
+     * @param onErroredAndClosed The function called when the UI errors and closes.
+     * @param onCompletedAndClosed The function called when the UI completes and closes.
      */
-    public void onPaymentRequestComplete(int result,
-                                         ErrorAndCloseObserver onMinimalUiErroredAndClosed,
-                                         CompleteAndCloseObserver onMinimalUiCompletedAndClosed) {
+    public void onPaymentRequestComplete(int result, ErrorAndCloseObserver onErroredAndClosed,
+            CompleteAndCloseObserver onCompletedAndClosed) {
         if (result == PaymentComplete.FAIL) {
-            showErrorAndClose(onMinimalUiErroredAndClosed, R.string.payments_error_message);
+            showErrorAndClose(onErroredAndClosed, R.string.payments_error_message);
         } else {
-            showCompleteAndClose(onMinimalUiCompletedAndClosed);
+            showCompleteAndClose(onCompletedAndClosed);
         }
     }