Display setting and support in a tab layout - DO NOT MERGE

Bug: 28269035
Bug: 28139604

src/com/android/settings/overlay/FeatureFactory.java

@@ -59,6 +59,8 @@ public abstract class FeatureFactory {
         return sFactory;
     }
 
+    public abstract SupportFeatureProvider getSupportFeatureProvider();
+
     public static final class FactoryNotFoundException extends RuntimeException {
         public FactoryNotFoundException(Throwable throwable) {
             super("Unable to create factory. Did you misconfigure Proguard?", throwable);

src/com/android/settings/overlay/FeatureFactoryImpl.java

@@ -19,5 +19,11 @@ package com.android.settings.overlay;
 /**
  * {@link FeatureFactory} implementation for AOSP Settings.
  */
-public class FeatureFactoryImpl extends FeatureFactory {
+public final class FeatureFactoryImpl extends FeatureFactory {
+
+    @Override
+    public SupportFeatureProvider getSupportFeatureProvider() {
+        return null;
+    }
+
 }

src/com/android/settings/overlay/SupportFeatureProvider.java

@@ -0,0 +1,8 @@
+package com.android.settings.overlay;
+
+/**
+ * Feature provider for support tab.
+ */
+public interface SupportFeatureProvider {
+
+}