Converts overview to use common ash types

ash/wm/overview/scoped_overview_animation_settings_factory.h

Index: ash/wm/overview/scoped_overview_animation_settings_factory.h
diff --git a/ash/wm/overview/scoped_overview_animation_settings_factory.h b/ash/wm/overview/scoped_overview_animation_settings_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..007ce7cd751fd36a72ef8abd1b6177670441177b
--- /dev/null
+++ b/ash/wm/overview/scoped_overview_animation_settings_factory.h
@@ -0,0 +1,39 @@
+// 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_FACTORY_H_
+#define ASH_WM_OVERVIEW_SCOPED_OVERVIEW_ANIMATION_SETTINGS_FACTORY_H_
+
+#include <memory>
+
+#include "ash/wm/overview/overview_animation_type.h"
+
+namespace ash {
+
+class ScopedOverviewAnimationSettings;
+
+namespace wm {
+class WmWindow;
+}
+
+// Factory for creating ScopedOverviewAnimationSettings.
+class ScopedOverviewAnimationSettingsFactory {
+ public:
+  static ScopedOverviewAnimationSettingsFactory* Get();
+
+  virtual std::unique_ptr<ScopedOverviewAnimationSettings>
+  CreateOverviewAnimationSettings(OverviewAnimationType animation_type,
+                                  wm::WmWindow* window) = 0;
+
+ protected:
+  ScopedOverviewAnimationSettingsFactory();
+  virtual ~ScopedOverviewAnimationSettingsFactory();
+
+ private:
+  static ScopedOverviewAnimationSettingsFactory* instance_;
+};
+
+}  // namespace ash
+
+#endif  // ASH_WM_OVERVIEW_SCOPED_OVERVIEW_ANIMATION_SETTINGS_FACTORY_H_