Changes views_aura_mus_unittests to create DesktopNativeWidgetAura

ui/views/controls/native/native_view_host_aura_unittest.cc

Index: ui/views/controls/native/native_view_host_aura_unittest.cc
diff --git a/ui/views/controls/native/native_view_host_aura_unittest.cc b/ui/views/controls/native/native_view_host_aura_unittest.cc
index 40b5ce771a621b7ecb8b51d3e6ef7c7b9a5a7861..4169273259e8fa5cfac0639ca4461dbb6e95e848 100644
--- a/ui/views/controls/native/native_view_host_aura_unittest.cc
+++ b/ui/views/controls/native/native_view_host_aura_unittest.cc
@@ -269,7 +269,7 @@ TEST_F(NativeViewHostAuraTest, ParentAfterDetach) {
 
   DestroyHost();
   DestroyTopLevel();
-  if (!IsMus()) {
+  if (!IsMus() && !IsAuraMusClient()) {
     // The window is detached, so no longer associated with any Widget
     // hierarchy. The root window still owns it, but the test harness checks
     // for orphaned windows during TearDown().
@@ -277,9 +277,9 @@ TEST_F(NativeViewHostAuraTest, ParentAfterDetach) {
         << (*test_observer.events().begin()).type;
     delete child_win;
   } else {
-    // In mus, the child window is still attached to the aura::WindowTreeHost
-    // for the Widget. So destroying the toplevel Widget takes down the child
-    // window with it.
+    // In mus and aura-mus, the child window is still attached to the
+    // aura::WindowTreeHost for the Widget. So destroying the toplevel Widget
+    // takes down the child window with it.
   }
 
   ASSERT_EQ(1u, test_observer.events().size());