Directly use BaseIndexableProvider

- Add function getXmlResourceId, Fragments don't need to write
xml resource id twice.
- Remove getPreferenceControllers from Indexable.java. Because it will
move to SettingsLib later for other apps which don't need this function

Bug: 135053028
Test: robolectric
Change-Id: I1e74519aecdea3dde64a5aea79f08d766dbc0003

src/com/android/settings/accounts/AccountDashboardFragment.java

@@ -19,7 +19,6 @@ import static android.provider.Settings.EXTRA_AUTHORITIES;
 
 import android.app.settings.SettingsEnums;
 import android.content.Context;
-import android.provider.SearchIndexableResource;
 
 import com.android.settings.R;
 import com.android.settings.SettingsPreferenceFragment;
@@ -32,7 +31,6 @@ import com.android.settingslib.core.AbstractPreferenceController;
 import com.android.settingslib.search.SearchIndexable;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
 
 @SearchIndexable
@@ -53,7 +51,7 @@ public class AccountDashboardFragment extends DashboardFragment {
 
     @Override
     protected int getPreferenceScreenResId() {
-        return R.xml.accounts_dashboard_settings;
+        return SEARCH_INDEX_DATA_PROVIDER.getXmlResourceId();
     }
 
     @Override
@@ -83,15 +81,8 @@ public class AccountDashboardFragment extends DashboardFragment {
         return controllers;
     }
 
-    public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
-            new BaseSearchIndexProvider() {
-                @Override
-                public List<SearchIndexableResource> getXmlResourcesToIndex(
-                        Context context, boolean enabled) {
-                    final SearchIndexableResource sir = new SearchIndexableResource(context);
-                    sir.xmlResId = R.xml.accounts_dashboard_settings;
-                    return Arrays.asList(sir);
-                }
+    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider(R.xml.accounts_dashboard_settings) {
 
                 @Override
                 public List<AbstractPreferenceController> createPreferenceControllers(