[Payments] Allow users enable and disable Android payment apps in payment request

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

Index: chrome/android/java/src/org/chromium/chrome/browser/payments/AndroidPaymentAppFactory.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/AndroidPaymentAppFactory.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/AndroidPaymentAppFactory.java
index a868d46e94ff4d921e6271b7067d4e1aa85c912d..ca17fba70d3f7331e3b8ac1aa571d33828819049 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/payments/AndroidPaymentAppFactory.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/AndroidPaymentAppFactory.java
@@ -8,8 +8,11 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
+import android.graphics.drawable.Drawable;
 import android.net.Uri;
+import android.util.Pair;
 
+import org.chromium.base.ContextUtils;
 import org.chromium.chrome.browser.payments.PaymentAppFactory.PaymentAppCreatedCallback;
 import org.chromium.chrome.browser.payments.PaymentAppFactory.PaymentAppFactoryAddition;
 import org.chromium.content_public.browser.WebContents;
@@ -58,6 +61,8 @@ public class AndroidPaymentAppFactory implements PaymentAppFactoryAddition {
             for (int i = 0; i < matches.size(); i++) {
                 ResolveInfo match = matches.get(i);
                 String packageName = match.activityInfo.packageName;
+                // Do not recommend disabled apps.
+                if (!PaymentPreferencesUtil.isAndroidPaymentAppEnabled(packageName)) continue;
                 AndroidPaymentApp installedApp = installedApps.get(packageName);
                 if (installedApp == null) {
                     CharSequence label = match.loadLabel(pm);
@@ -81,4 +86,40 @@ public class AndroidPaymentAppFactory implements PaymentAppFactoryAddition {
 
         callback.onAllPaymentAppsCreated();
     }
+
+    /**
+     * Checks whether there are Android payment apps on device.
+     *
+     * @return True if there are Android payment apps on device.
+     */
+    public static boolean hasAndroidPaymentApps() {
+        PackageManager pm = ContextUtils.getApplicationContext().getPackageManager();
+        // Note that all Android payment apps must support org.chromium.intent.action.PAY action
+        // without additional data to be detected.
+        Intent payIntent = new Intent(AndroidPaymentApp.ACTION_PAY);
+        return !pm.queryIntentActivities(payIntent, 0).isEmpty();
+    }
+
+    /**
+     * Gets Android payments apps' information on device.
+     *
+     * @return Map of Android payment apps' package names to their information. Each entry of the
+     *         map represents an app and the value stores its name and icon.
+     */
+    public static Map<String, Pair<String, Drawable>> getAndroidPaymentAppsInfo() {
+        Map<String, Pair<String, Drawable>> paymentAppsInfo = new HashMap<>();
+
+        PackageManager pm = ContextUtils.getApplicationContext().getPackageManager();
+        Intent payIntent = new Intent(AndroidPaymentApp.ACTION_PAY);
+        List<ResolveInfo> matches = pm.queryIntentActivities(payIntent, 0);
+        if (matches.isEmpty()) return paymentAppsInfo;
+
+        for (ResolveInfo match : matches) {
+            Pair<String, Drawable> appInfo =
+                    new Pair<String, Drawable>(match.loadLabel(pm).toString(), match.loadIcon(pm));
+            paymentAppsInfo.put(match.activityInfo.packageName, appInfo);
+        }
+
+        return paymentAppsInfo;
+    }
 }