Force navigation to use root tag

Summary: This diff ensures that JS uses rootTags during navigation. A redbox will be rendered in debug mode when a non-rootTag is used during navigation. This change enables proper navigation for Fabric.

Reviewed By: shergin

Differential Revision: D10855198

fbshipit-source-id: a82aaa706cd62ce92143fa86d0a422c1ae439a50

Author: mdvacca

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

@@ -806,7 +806,9 @@ public void removeUIManagerListener(UIManagerModuleListener listener) {
    * @return the rootTag
    */
   public int resolveRootTagFromReactTag(int reactTag) {
-    return mUIImplementation.resolveRootTagFromReactTag(reactTag);
+    return ViewUtil.isRootTag(reactTag)
+        ? reactTag
+        : mUIImplementation.resolveRootTagFromReactTag(reactTag);
   }
 
   /** Dirties the node associated with the given react tag */

ReactAndroid/src/main/java/com/facebook/react/uimanager/common/ViewUtil.java

@@ -25,4 +25,13 @@ public static int getUIManagerType(int reactTag) {
     return DEFAULT;
   }
 
+  /**
+   * @param reactTag {@link int} react tag
+   * @return if the react tag received by parameter is a RootTag or not.
+   */
+  @Deprecated
+  public static boolean isRootTag(int reactTag) {
+    return reactTag % 10 == 1;
+  }
+
 }