Get view manager client lib unit test harness to run again. Does not get any individual tests worki…

mojo/services/public/cpp/view_manager/lib/view_manager_private.h

Index: mojo/services/public/cpp/view_manager/lib/view_manager_private.h
diff --git a/mojo/services/public/cpp/view_manager/lib/view_manager_private.h b/mojo/services/public/cpp/view_manager/lib/view_manager_private.h
index a2b2aab3fe2cb5d222560f80db22caec3209066e..1c091ed56c095d71928f98b77599ac5f8318d500 100644
--- a/mojo/services/public/cpp/view_manager/lib/view_manager_private.h
+++ b/mojo/services/public/cpp/view_manager/lib/view_manager_private.h
@@ -19,6 +19,10 @@ class ViewManagerPrivate {
   explicit ViewManagerPrivate(ViewManager* manager);
   ~ViewManagerPrivate();
 
+  void NotifyReady() {
+    manager_->ready_callback_.Run(manager_);
+  }
+
   ViewManagerSynchronizer* synchronizer() {
     return manager_->synchronizer_;
   }