Does not override default animation when closing a docked window

ash/wm/dock/docked_window_layout_manager.cc

 // Copyright (c) 2013 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/wm/dock/docked_window_layout_manager.h"
 
 #include "ash/ash_switches.h"
 #include "ash/launcher/launcher.h"
 #include "ash/screen_ash.h"
 #include "ash/shelf/shelf_layout_manager.h"
@@ skipping 583 matching lines @@
     const gfx::Rect& new_bounds) {
   // Only relayout if the dragged window would get docked.
   if (window == dragged_window_ && is_dragged_window_docked_)
     Relayout();
 }
 
 void DockedWindowLayoutManager::OnWindowVisibilityChanging(
     aura::Window* window, bool visible) {
   if (IsPopupOrTransient(window))
     return;
-  int animation_type = WINDOW_VISIBILITY_ANIMATION_TYPE_MINIMIZE;
+  int animation_type = views::corewm::WINDOW_VISIBILITY_ANIMATION_TYPE_DEFAULT;
   if (visible) {
-    animation_type = views::corewm::WINDOW_VISIBILITY_ANIMATION_TYPE_DEFAULT;
+    animation_type = views::corewm::WINDOW_VISIBILITY_ANIMATION_TYPE_DROP;
     views::corewm::SetWindowVisibilityAnimationDuration(
         window, base::TimeDelta::FromMilliseconds(kFadeDurationMs));
+  } else if (wm::GetWindowState(window)->IsMinimized()) {
+    animation_type = WINDOW_VISIBILITY_ANIMATION_TYPE_MINIMIZE;
   }
   views::corewm::SetWindowVisibilityAnimationType(window, animation_type);
 }
 
 void DockedWindowLayoutManager::OnWindowDestroying(aura::Window* window) {
   if (dragged_window_ == window) {
     FinishDragging(DOCKED_ACTION_NONE, DOCKED_ACTION_SOURCE_UNKNOWN);
     DCHECK(!dragged_window_);
     DCHECK (!is_dragged_window_docked_);
   }
@@ skipping 451 matching lines @@
 void DockedWindowLayoutManager::OnKeyboardBoundsChanging(
     const gfx::Rect& keyboard_bounds) {
   // This bounds change will have caused a change to the Shelf which does not
   // propagate automatically to this class, so manually recalculate bounds.
   Relayout();
   UpdateDockBounds(DockedWindowLayoutManagerObserver::KEYBOARD_BOUNDS_CHANGING);
 }
 
 }  // namespace internal
 }  // namespace ash