Changes views_aura_mus_unittests to create DesktopNativeWidgetAura

ui/views/controls/button/menu_button_unittest.cc

Index: ui/views/controls/button/menu_button_unittest.cc
diff --git a/ui/views/controls/button/menu_button_unittest.cc b/ui/views/controls/button/menu_button_unittest.cc
index c0fb1c320f7b8145898c57fdaf93db53b75bfc5d..573fca0f99dcaa8c74783f15c16219d2ccb781b7 100644
--- a/ui/views/controls/button/menu_button_unittest.cc
+++ b/ui/views/controls/button/menu_button_unittest.cc
@@ -345,6 +345,13 @@ TEST_F(MenuButtonTest, ButtonStateForMenuButtonsWithPressedLocks) {
   // mouse-move event. https://crbug.com/615033
   if (IsMus())
     return;
+
+  // Similarly for aura-mus-client the location of the cursor is not updated by
+  // EventGenerator so that IsMouseHovered() checks the wrong thing.
+  // https://crbug.com/615033.
+  if (IsAuraMusClient())
+    return;
+
   CreateMenuButtonWithNoListener();
 
   // Move the mouse over the button; the button should be in a hovered state.
@@ -537,6 +544,10 @@ TEST_F(MenuButtonTest, DraggableMenuButtonDoesNotActivateOnDrag) {
   // https://crbug.com/614037.
   if (IsMus())
     return;
+  // TODO: test uses GetContext(), which is not applicable to aura-mus.
+  // http://crbug.com/663809.
+  if (IsAuraMusClient())
+    return;
   TestMenuButtonListener menu_button_listener;
   CreateMenuButtonWithMenuButtonListener(&menu_button_listener);
   TestDragController drag_controller;
@@ -563,6 +574,11 @@ TEST_F(MenuButtonTest, ActivateDropDownOnGestureTap) {
   // mouse-move event. https://crbug.com/615033
   if (IsMus())
     return;
+  // Similarly for aura-mus-client the location of the cursor is not updated by
+  // EventGenerator so that IsMouseHovered() checks the wrong thing.
+  // https://crbug.com/615033.
+  if (IsAuraMusClient())
+    return;
   TestMenuButtonListener menu_button_listener;
   CreateMenuButtonWithMenuButtonListener(&menu_button_listener);