Fix broken test.

mojo/services/public/cpp/view_manager/tests/node_unittest.cc

Index: mojo/services/public/cpp/view_manager/tests/node_unittest.cc
diff --git a/mojo/services/public/cpp/view_manager/tests/node_unittest.cc b/mojo/services/public/cpp/view_manager/tests/node_unittest.cc
index c7daf070b90d8708f83dd0b7be435a477e90d512..eee3d738bb8d9e14a2fe512f9315bda0aff32dbb 100644
--- a/mojo/services/public/cpp/view_manager/tests/node_unittest.cc
+++ b/mojo/services/public/cpp/view_manager/tests/node_unittest.cc
@@ -349,6 +349,12 @@ class OrderChangeObserver : public NodeObserver {
 
  private:
   // Overridden from NodeObserver:
+  virtual void OnNodeReordering(Node* node,
+                                Node* relative_node,
+                                OrderDirection direction) OVERRIDE {
+    OnNodeReordered(node, relative_node, direction);
+  }
+
   virtual void OnNodeReordered(Node* node,
                                Node* relative_node,
                                OrderDirection direction) OVERRIDE {