PaymentApp: Add classes for supporting Web Based Payment Apps

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

Index: chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentAppFactory.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentAppFactory.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentAppFactory.java
index 06bf964172c65de8d180ec1d4b8670dbb0d33201..69116d1574beebe756fb0636c041aafcec41211b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentAppFactory.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/PaymentAppFactory.java
@@ -7,6 +7,7 @@ package org.chromium.chrome.browser.payments;
 import android.content.Context;
 
 import org.chromium.base.VisibleForTesting;
+import org.chromium.chrome.browser.ChromeFeatureList;
 import org.chromium.content_public.browser.WebContents;
 
 import java.util.ArrayList;
@@ -23,6 +24,12 @@ public class PaymentAppFactory {
     private static PaymentAppFactoryAddition sAdditionalFactory;
 
     /**
+     * Native bridge that can be used to retrieve information about installed service worker
+     * payment apps.
+     */
+    private static ServiceWorkerPaymentAppBridge sServiceWorkerPaymentAppBridge;
+
+    /**
      * The interface for additional payment app factories.
      */
     public interface PaymentAppFactoryAddition {
@@ -46,6 +53,15 @@ public class PaymentAppFactory {
     }
 
     /**
+     * Set a custom native bridge for service worker payment apps for testing.
+     */
+    @VisibleForTesting
+    public static void setServiceWorkerPaymentAppBridgeForTest(
+            ServiceWorkerPaymentAppBridge bridge) {
+        sServiceWorkerPaymentAppBridge = bridge;
+    }
+
+    /**
      * Builds instances of payment apps.
      *
      * @param context     The context.
@@ -54,10 +70,36 @@ public class PaymentAppFactory {
     public static List<PaymentApp> create(Context context, WebContents webContents) {
         List<PaymentApp> result = new ArrayList<>(2);
         result.add(new AutofillPaymentApp(context, webContents));
+
+        result.addAll(createServiceWorkerPaymentApps());
+
         if (sAdditionalFactory != null) {
             result.addAll(
                     sAdditionalFactory.create(context, webContents));
         }
         return result;
     }
+
+    /**
+     * Build a ServiceWorkerPaymentApp instance for each installed service
+     * worker based payment app.
+     */
+    private static List<ServiceWorkerPaymentApp> createServiceWorkerPaymentApps() {
+        if (sServiceWorkerPaymentAppBridge == null) {
+            if (ChromeFeatureList.isEnabled(ChromeFeatureList.SERVICE_WORKER_PAYMENT_APPS)) {
+                sServiceWorkerPaymentAppBridge = new ServiceWorkerPaymentAppBridge();
+            } else {
+                return new ArrayList<>();
+            }
+        }
+
+        List<ServiceWorkerPaymentApp> result = new ArrayList<>();
+
+        for (ServiceWorkerPaymentAppBridge.Manifest manifest :
+                sServiceWorkerPaymentAppBridge.getAllAppManifests()) {
+            result.add(new ServiceWorkerPaymentApp(manifest));
+        }
+
+        return result;
+    }
 }