Changes views_aura_mus_unittests to create DesktopNativeWidgetAura

ui/views/test/platform_test_helper.cc

 // Copyright 2016 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.
 
 #include "ui/views/test/platform_test_helper.h"
 
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
+#include "ui/views/widget/widget.h"
+
+#if defined(USE_AURA)
+#include "ui/aura/window.h"
+#endif
 
 namespace views {
 namespace {
 
-class DefaultPlatformTestHelper : public PlatformTestHelper {
- public:
-  DefaultPlatformTestHelper() {}
-
-  ~DefaultPlatformTestHelper() override {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(DefaultPlatformTestHelper);
-};
-
 PlatformTestHelper::Factory test_helper_factory;
 bool is_mus = false;
 bool is_aura_mus_client = false;
 
 }  // namespace
 
 void PlatformTestHelper::set_factory(const Factory& factory) {
   DCHECK(test_helper_factory.is_null());
   test_helper_factory = factory;
 }
 
 // static
 std::unique_ptr<PlatformTestHelper> PlatformTestHelper::Create() {
   return !test_helper_factory.is_null()
              ? test_helper_factory.Run()
-             : base::WrapUnique(new DefaultPlatformTestHelper);
+             : base::WrapUnique(new PlatformTestHelper);
 }
 
 // static
 void PlatformTestHelper::SetIsMus() {
   is_mus = true;
 }
 
 // static
 bool PlatformTestHelper::IsMus() {
   return is_mus;
 }
 
 // static
 void PlatformTestHelper::SetIsAuraMusClient() {
   is_aura_mus_client = true;
 }
 
 // static
 bool PlatformTestHelper::IsAuraMusClient() {
   return is_aura_mus_client;
 }
 
+#if defined(USE_AURA)
+void PlatformTestHelper::SimulateNativeDestroy(Widget* widget) {
+  delete widget->GetNativeView();
+}
+#endif
+
 }  // namespace views