It is time.

ui/wm/core/visibility_controller.cc

Index: ui/wm/core/visibility_controller.cc
diff --git a/ui/wm/core/visibility_controller.cc b/ui/wm/core/visibility_controller.cc
deleted file mode 100644
index fc187a949028c0d6b7683d5b78f8b041abb99782..0000000000000000000000000000000000000000
--- a/ui/wm/core/visibility_controller.cc
+++ /dev/null
@@ -1,89 +0,0 @@
-// 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/wm/core/visibility_controller.h"
-
-#include "ui/aura/window.h"
-#include "ui/aura/window_property.h"
-#include "ui/compositor/layer.h"
-#include "ui/wm/core/window_animations.h"
-
-namespace wm {
-
-namespace {
-
-// Property set on all windows whose child windows' visibility changes are
-// animated.
-DEFINE_WINDOW_PROPERTY_KEY(
-    bool, kChildWindowVisibilityChangesAnimatedKey, false);
-
-bool ShouldAnimateWindow(aura::Window* window) {
-  return window->parent() && window->parent()->GetProperty(
-      kChildWindowVisibilityChangesAnimatedKey);
-}
-
-}  // namespace
-
-VisibilityController::VisibilityController() {
-}
-
-VisibilityController::~VisibilityController() {
-}
-
-bool VisibilityController::CallAnimateOnChildWindowVisibilityChanged(
-    aura::Window* window,
-    bool visible) {
-  return AnimateOnChildWindowVisibilityChanged(window, visible);
-}
-
-void VisibilityController::UpdateLayerVisibility(aura::Window* window,
-                                                 bool visible) {
-  bool animated = window->type() != ui::wm::WINDOW_TYPE_CONTROL &&
-                  window->type() != ui::wm::WINDOW_TYPE_UNKNOWN &&
-                  ShouldAnimateWindow(window);
-  animated = animated &&
-      CallAnimateOnChildWindowVisibilityChanged(window, visible);
-
-  // If we're already in the process of hiding don't do anything. Otherwise we
-  // may end up prematurely canceling the animation.
-  // This does not check opacity as when fading out a visibility change should
-  // also be scheduled (to do otherwise would mean the window can not be seen,
-  // opacity is 0, yet the window is marked as visible) (see CL 132903003).
-  // TODO(vollick): remove this.
-  if (!visible &&
-      window->layer()->GetAnimator()->IsAnimatingProperty(
-          ui::LayerAnimationElement::VISIBILITY) &&
-      !window->layer()->GetTargetVisibility()) {
-    return;
-  }
-
-  // When a window is made visible, we always make its layer visible
-  // immediately. When a window is hidden, the layer must be left visible and
-  // only made not visible once the animation is complete.
-  if (!animated || visible)
-    window->layer()->SetVisible(visible);
-}
-
-SuspendChildWindowVisibilityAnimations::SuspendChildWindowVisibilityAnimations(
-    aura::Window* window)
-    : window_(window),
-      original_enabled_(window->GetProperty(
-          kChildWindowVisibilityChangesAnimatedKey)) {
-  window_->ClearProperty(kChildWindowVisibilityChangesAnimatedKey);
-}
-
-SuspendChildWindowVisibilityAnimations::
-    ~SuspendChildWindowVisibilityAnimations() {
-  if (original_enabled_)
-    window_->SetProperty(kChildWindowVisibilityChangesAnimatedKey, true);
-  else
-    window_->ClearProperty(kChildWindowVisibilityChangesAnimatedKey);
-}
-
-void SetChildWindowVisibilityChangesAnimated(aura::Window* window) {
-  window->SetProperty(kChildWindowVisibilityChangesAnimatedKey, true);
-}
-
-}  // namespace wm
-