Use SettingsLib Indexable

- Use SettingsLib Indexable
- Directly use resource id in getPreferenceScreenResId

Bug: 135053028
Test: roboletric
Change-Id: I05f493b55e8b6e2091301e9231ba5615215618e6

src/com/android/settings/search/BaseSearchIndexProvider.java

@@ -36,6 +36,8 @@ import com.android.settings.core.PreferenceControllerListHelper;
 import com.android.settings.core.PreferenceControllerMixin;
 import com.android.settings.core.PreferenceXmlParserUtils;
 import com.android.settingslib.core.AbstractPreferenceController;
+import com.android.settingslib.search.Indexable;
+import com.android.settingslib.search.SearchIndexableRaw;
 
 import org.xmlpull.v1.XmlPullParserException;
 
@@ -134,13 +136,6 @@ public class BaseSearchIndexProvider implements Indexable.SearchIndexProvider {
         return null;
     }
 
-    /**
-     * Returns the xml resource Id.
-     */
-    public int getXmlResourceId() {
-        return mXmlRes;
-    }
-
     /**
      * Returns true if the page should be considered in search query. If return false, entire page
      * will be suppressed during search query.