[ash-md] Fades overview header in and out

ash/mus/bridge/wm_window_mus.h

 // 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_MUS_BRIDGE_WM_WINDOW_MUS_H_
 #define ASH_MUS_BRIDGE_WM_WINDOW_MUS_H_
 
 #include <memory>
 
 #include "ash/common/shell_window_ids.h"
@@ skipping 111 matching lines @@
   gfx::Point ConvertPointToScreen(const gfx::Point& point) const override;
   gfx::Point ConvertPointFromScreen(const gfx::Point& point) const override;
   gfx::Rect ConvertRectToScreen(const gfx::Rect& rect) const override;
   gfx::Rect ConvertRectFromScreen(const gfx::Rect& rect) const override;
   gfx::Size GetMinimumSize() const override;
   gfx::Size GetMaximumSize() const override;
   bool GetTargetVisibility() const override;
   bool IsVisible() const override;
   void SetOpacity(float opacity) override;
   float GetTargetOpacity() const override;
+  gfx::Rect GetMinimizeAnimationTargetBoundsInScreen() const override;
   void SetTransform(const gfx::Transform& transform) override;
   gfx::Transform GetTargetTransform() const override;
   bool IsSystemModal() const override;
   bool GetBoolProperty(WmWindowProperty key) override;
   int GetIntProperty(WmWindowProperty key) override;
   void SetIntProperty(WmWindowProperty key, int value) override;
   ShelfItemDetails* GetShelfItemDetails() override;
   void SetShelfItemDetails(const ShelfItemDetails& details) override;
   void ClearShelfItemDetails() override;
   const wm::WindowState* GetWindowState() const override;
@@ skipping 141 matching lines @@
   // If true the minimum size is 0x0, default is minimum size comes from widget.
   bool use_empty_minimum_size_for_testing_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(WmWindowMus);
 };
 
 }  // namespace mus
 }  // namespace ash
 
 #endif  // ASH_MUS_BRIDGE_WM_WINDOW_MUS_H_