[ash-md] Fades overview header in and out

ash/aura/wm_window_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/aura/wm_window_aura.h"
 
 #include "ash/aura/aura_layout_manager_adapter.h"
 #include "ash/aura/wm_root_window_controller_aura.h"
 #include "ash/aura/wm_shell_aura.h"
 #include "ash/common/ash_constants.h"
@@ skipping 230 matching lines @@
 }
 
 void WmWindowAura::SetOpacity(float opacity) {
   window_->layer()->SetOpacity(opacity);
 }
 
 float WmWindowAura::GetTargetOpacity() const {
   return window_->layer()->GetTargetOpacity();
 }
 
+gfx::Rect WmWindowAura::GetMinimizeAnimationTargetBoundsInScreen() const {
+  return ash::GetMinimizeAnimationTargetBoundsInScreen(window_);
+}
+
 void WmWindowAura::SetTransform(const gfx::Transform& transform) {
   window_->SetTransform(transform);
 }
 
 gfx::Transform WmWindowAura::GetTargetTransform() const {
   return window_->layer()->GetTargetTransform();
 }
 
 bool WmWindowAura::IsSystemModal() const {
   return window_->GetProperty(aura::client::kModalKey) == ui::MODAL_TYPE_SYSTEM;
@@ skipping 563 matching lines @@
                     OnTransientChildAdded(this, Get(transient)));
 }
 
 void WmWindowAura::OnTransientChildRemoved(aura::Window* window,
                                            aura::Window* transient) {
   FOR_EACH_OBSERVER(WmTransientWindowObserver, transient_observers_,
                     OnTransientChildRemoved(this, Get(transient)));
 }
 
 }  // namespace ash