Changes views_aura_mus_unittests to create DesktopNativeWidgetAura

ui/views/test/views_test_base.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_VIEWS_TEST_VIEWS_TEST_BASE_H_
 #define UI_VIEWS_TEST_VIEWS_TEST_BASE_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 30 matching lines @@
   void TearDown() override;
 
   void RunPendingMessages();
 
   // Creates a widget of |type| with any platform specific data for use in
   // cross-platform tests.
   Widget::InitParams CreateParams(Widget::InitParams::Type type);
 
   bool HasCompositingManager() const;
 
+  // Simulate an OS-level destruction of the native window held by |widget|.
+  void SimulateNativeDestroy(Widget* widget);
+
  protected:
   TestViewsDelegate* views_delegate() const {
     return test_helper_->views_delegate();
   }
 
   void set_views_delegate(std::unique_ptr<TestViewsDelegate> views_delegate) {
     DCHECK(!setup_called_);
     views_delegate_for_setup_.swap(views_delegate);
   }
 
@@ skipping 14 matching lines @@
 #if defined(OS_WIN)
   ui::ScopedOleInitializer ole_initializer_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(ViewsTestBase);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_TEST_VIEWS_TEST_BASE_H_