Random wm frame painting fixes

mash/wm/window_manager.cc

Index: mash/wm/window_manager.cc
diff --git a/mash/wm/window_manager.cc b/mash/wm/window_manager.cc
index 4ebeb9a81eb34f5bb25774cd61d0e545636bcfec..5bcd15e1a7424491c0ec6a58249005a16e2bc1f9 100644
--- a/mash/wm/window_manager.cc
+++ b/mash/wm/window_manager.cc
@@ -113,9 +113,8 @@ mus::Window* WindowManager::NewTopLevelWindow(
   root_controller_->GetWindowForContainer(container)->AddChild(window);
 
   if (provide_non_client_frame) {
-    // NonClientFrameController deletes itself when |window| is destroyed.
-    new NonClientFrameController(root_controller_->GetConnector(), window,
-                                 root_controller_->window_manager_client());
+    NonClientFrameController::Create(root_controller_->GetConnector(), window,
+                                     root_controller_->window_manager_client());
   }
 
   root_controller_->IncrementWindowCount();