Add getShadowNodeClass method to ViewManager interface.

Differential Revision: D2535731

fb-gh-sync-id: 7a68778ea4ca47b113d73b1d638d74d905ea2da5

ReactAndroid/src/main/java/com/facebook/react/uimanager/SimpleViewManager.java

@@ -23,10 +23,15 @@ public abstract class SimpleViewManager<T extends View> extends
     BaseViewManager<T, ReactShadowNode> {
 
   @Override
-  public ReactShadowNode createCSSNodeInstance() {
+  public ReactShadowNode createShadowNodeInstance() {
     return new ReactShadowNode();
   }
 
+  @Override
+  public Class<ReactShadowNode> getShadowNodeClass() {
+    return ReactShadowNode.class;
+  }
+
   @Override
   public void updateExtraData(T root, Object extraData) {
   }