Reland of [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 235 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 11 matching lines @@
       return window_->GetProperty(aura::client::kExcludeFromMruKey);
 
     default:
       NOTREACHED();
       break;
   }
 
   return false;
 }
 
+SkColor WmWindowAura::GetColorProperty(WmWindowProperty key) {
+  if (key == WmWindowProperty::TOP_VIEW_COLOR)
+    return window_->GetProperty(aura::client::kTopViewColor);
+
+  NOTREACHED();
+  return 0;
+}
+
+void WmWindowAura::SetColorProperty(WmWindowProperty key, SkColor value) {
+  if (key == WmWindowProperty::TOP_VIEW_COLOR) {
+    window_->SetProperty(aura::client::kTopViewColor, value);
+    return;
+  }
+
+  NOTREACHED();
+}
+
 int WmWindowAura::GetIntProperty(WmWindowProperty key) {
   if (key == WmWindowProperty::SHELF_ID)
     return GetShelfIDForWindow(window_);
 
   if (key == WmWindowProperty::TOP_VIEW_INSET)
     return window_->GetProperty(aura::client::kTopViewInset);
 
   NOTREACHED();
   return 0;
 }
@@ skipping 536 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