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

chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillAndPaymentsPreferences.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillAndPaymentsPreferences.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillAndPaymentsPreferences.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillAndPaymentsPreferences.java
index 2841b2995404cf6cbcf3483b80ecb23be1292d70..6b98b0eb9e86fd797ffba652d44f195a94e73f90 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillAndPaymentsPreferences.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillAndPaymentsPreferences.java
@@ -10,7 +10,9 @@ import android.preference.Preference.OnPreferenceChangeListener;
 import android.preference.PreferenceFragment;
 
 import org.chromium.chrome.R;
+import org.chromium.chrome.browser.ChromeFeatureList;
 import org.chromium.chrome.browser.autofill.PersonalDataManager;
+import org.chromium.chrome.browser.payments.AndroidPaymentAppFactory;
 import org.chromium.chrome.browser.preferences.ChromeSwitchPreference;
 
 /**
@@ -24,6 +26,7 @@ public class AutofillAndPaymentsPreferences extends PreferenceFragment {
     // chrome/browser/ui/webui/options/autofill_options_handler.cc
     public static final String SETTINGS_ORIGIN = "Chrome settings";
     private static final String PREF_AUTOFILL_SWITCH = "autofill_switch";
+    private static final String PREF_ANDROID_PAYMENT_APPS = "android_payment_apps";
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -40,6 +43,15 @@ public class AutofillAndPaymentsPreferences extends PreferenceFragment {
                 return true;
             }
         });
+
+        if (ChromeFeatureList.isEnabled(ChromeFeatureList.ANDROID_PAYMENT_APPS)) {
+            Preference pref = new Preference(getActivity());
+            pref.setTitle(getActivity().getString(R.string.payment_apps_title));
+            pref.setFragment(AndroidPaymentAppsFragment.class.getCanonicalName());
+            pref.setShouldDisableView(true);
+            pref.setKey(PREF_ANDROID_PAYMENT_APPS);
+            getPreferenceScreen().addPreference(pref);
+        }
     }
 
     @Override
@@ -47,5 +59,19 @@ public class AutofillAndPaymentsPreferences extends PreferenceFragment {
         super.onResume();
         ((ChromeSwitchPreference) findPreference(PREF_AUTOFILL_SWITCH))
                 .setChecked(PersonalDataManager.isAutofillEnabled());
+        refreshPaymentAppsPref();
+    }
+
+    private void refreshPaymentAppsPref() {
+        Preference pref = findPreference(PREF_ANDROID_PAYMENT_APPS);
+        if (pref != null) {
+            if (AndroidPaymentAppFactory.hasAndroidPaymentApps()) {
+                pref.setSummary(null);
+                pref.setEnabled(true);
+            } else {
+                pref.setSummary(getActivity().getString(R.string.payment_no_apps_summary));
+                pref.setEnabled(false);
+            }
+        }
     }
 }