Converts overview to use common ash types

ash/wm/overview/scoped_overview_animation_settings_aura.h

Index: ash/wm/overview/scoped_overview_animation_settings_aura.h
diff --git a/ash/wm/overview/scoped_overview_animation_settings_aura.h b/ash/wm/overview/scoped_overview_animation_settings_aura.h
new file mode 100644
index 0000000000000000000000000000000000000000..dd325a450630f52a7095598dfe1b25fc18d93da1
--- /dev/null
+++ b/ash/wm/overview/scoped_overview_animation_settings_aura.h
@@ -0,0 +1,36 @@
+// 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.
+
+#ifndef ASH_WM_OVERVIEW_SCOPED_OVERVIEW_ANIMATION_SETTINGS_AURA_H_
+#define ASH_WM_OVERVIEW_SCOPED_OVERVIEW_ANIMATION_SETTINGS_AURA_H_
+
+#include "ash/wm/overview/overview_animation_type.h"
+#include "ash/wm/overview/scoped_overview_animation_settings.h"
+#include "base/macros.h"
+#include "ui/compositor/scoped_layer_animation_settings.h"
+
+namespace aura {
+class Window;
+}  // namespace aura
+
+namespace ash {
+
+// ScopedOverviewAnimationSettingsfor aura.
+class ScopedOverviewAnimationSettingsAura
+    : public ScopedOverviewAnimationSettings {
+ public:
+  ScopedOverviewAnimationSettingsAura(OverviewAnimationType animation_type,
+                                      aura::Window* window);
+  ~ScopedOverviewAnimationSettingsAura() override;
+
+ private:
+  // The managed animation settings.
+  ui::ScopedLayerAnimationSettings animation_settings_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedOverviewAnimationSettingsAura);
+};
+
+}  // namespace ash
+
+#endif  // ASH_WM_OVERVIEW_SCOPED_OVERVIEW_ANIMATION_SETTINGS_AURA_H_