Converts overview to use common ash types

ash/wm/overview/scoped_overview_animation_settings_factory_aura.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 "ash/wm/overview/scoped_overview_animation_settings_factory_aura.h"
+
+#include "ash/wm/aura/wm_window_aura.h"
+#include "ash/wm/overview/scoped_overview_animation_settings_aura.h"
+#include "base/memory/ptr_util.h"
+
+namespace ash {
+
+ScopedOverviewAnimationSettingsFactoryAura::
+    ScopedOverviewAnimationSettingsFactoryAura() {}
+
+ScopedOverviewAnimationSettingsFactoryAura::
+    ~ScopedOverviewAnimationSettingsFactoryAura() {}
+
+std::unique_ptr<ScopedOverviewAnimationSettings>
+ScopedOverviewAnimationSettingsFactoryAura::CreateOverviewAnimationSettings(
+    OverviewAnimationType animation_type,
+    wm::WmWindow* window) {
+  return base::WrapUnique(new ScopedOverviewAnimationSettingsAura(
+      animation_type, wm::WmWindowAura::GetAuraWindow(window)));
+}
+
+}  // namespace ash