Add InstantAppDomainsPreference for Spa

To try:
1. adb shell am start -n com.android.settings/.spa.SpaActivity
2. Go to Apps -> All apps -> [One Instant App] -> Supported links

Bug: 236346018
Test: Unit test
Test: Manually with Settings App
Change-Id: I344ddb9c2f3dbc47d38554bf45f04ca7c26c0e5f

src/com/android/settings/applications/OpenSupportedLinks.java

@@ -23,7 +23,6 @@ import android.app.settings.SettingsEnums;
 import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.text.TextUtils;
-import android.util.ArraySet;
 import android.util.Log;
 import android.view.View;
 
@@ -36,6 +35,8 @@ import com.android.settings.Utils;
 import com.android.settingslib.widget.FooterPreference;
 import com.android.settingslib.widget.SelectorWithWidgetPreference;
 
+import java.util.Set;
+
 /**
  * Display the Open Supported Links page. Allow users choose what kind supported links they need.
  */
@@ -195,7 +196,7 @@ public class OpenSupportedLinks extends AppInfoWithHeader implements
 
     @VisibleForTesting
     void addLinksToFooter(FooterPreference footer) {
-        final ArraySet<String> result = Utils.getHandledDomains(mPackageManager, mPackageName);
+        final Set<String> result = Utils.getHandledDomains(mPackageManager, mPackageName);
         if (result.isEmpty()) {
             Log.w(TAG, "Can't find any app links.");
             return;