Revert 139494 - ash: Improved window maximize/restore animations

ui/aura/window.cc

 // Copyright (c) 2012 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 "ui/aura/window.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
@@ skipping 128 matching lines @@
   layer_ = new ui::Layer(layer_type);
   layer_owner_.reset(layer_);
   layer_->SetVisible(false);
   layer_->set_delegate(this);
   UpdateLayerName(name_);
   layer_->SetFillsBoundsOpaquely(!transparent_);
 
   Env::GetInstance()->NotifyWindowInitialized(this);
 }
 
-ui::Layer* Window::RecreateLayer() {
-  // Disconnect the old layer, but don't delete it.
-  ui::Layer* old_layer = AcquireLayer();
-  old_layer->set_delegate(NULL);
-  layer_ = new ui::Layer(old_layer->type());
-  layer_owner_.reset(layer_);
-  layer_->SetVisible(old_layer->visible());
-  layer_->set_delegate(this);
-  UpdateLayerName(name_);
-  layer_->SetFillsBoundsOpaquely(!transparent_);
-  // Install new layer as a sibling of the old layer, stacked on top of it.
-  if (old_layer->parent()) {
-    old_layer->parent()->Add(layer_);
-    old_layer->parent()->StackAbove(layer_, old_layer);
-  }
-  // Migrate all the child layers over to the new layer. Copy the list because
-  // the items are removed during iteration.
-  std::vector<ui::Layer*> children_copy = old_layer->children();
-  for (std::vector<ui::Layer*>::const_iterator it = children_copy.begin();
-       it != children_copy.end();
-       ++it) {
-    ui::Layer* child = *it;
-    layer_->Add(child);
-  }
-  return old_layer;
-}
-
 void Window::SetType(client::WindowType type) {
   // Cannot change type after the window is initialized.
   DCHECK(!layer());
   type_ = type;
 }
 
 void Window::SetName(const std::string& name) {
   name_ = name;
 
   if (layer())
@@ skipping 663 matching lines @@
   for (Windows::const_reverse_iterator it = children_.rbegin(),
            rend = children_.rend();
        it != rend; ++it) {
     Window* child = *it;
     child->PrintWindowHierarchy(depth + 1);
   }
 }
 #endif
 
 }  // namespace aura