Remove unused ColoredWindowController/DesktopBackgroundFadeController

ash/wm/workspace/desktop_background_fade_controller.cc

Index: ash/wm/workspace/desktop_background_fade_controller.cc
diff --git a/ash/wm/workspace/desktop_background_fade_controller.cc b/ash/wm/workspace/desktop_background_fade_controller.cc
deleted file mode 100644
index abbdf578c8f6ff1c0f9e8728567a8b4707caf166..0000000000000000000000000000000000000000
--- a/ash/wm/workspace/desktop_background_fade_controller.cc
+++ /dev/null
@@ -1,65 +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 "ash/wm/workspace/desktop_background_fade_controller.h"
-
-#include "ash/wm/window_animations.h"
-#include "ash/wm/workspace/colored_window_controller.h"
-#include "base/time/time.h"
-#include "ui/aura/window.h"
-#include "ui/compositor/scoped_layer_animation_settings.h"
-#include "ui/views/widget/widget.h"
-
-namespace ash {
-namespace internal {
-
-DesktopBackgroundFadeController::DesktopBackgroundFadeController(
-    aura::Window* parent,
-    aura::Window* position_above,
-    base::TimeDelta duration,
-    Direction direction) {
-  SkColor start_color, target_color;
-  gfx::Tween::Type tween_type;
-  if (direction == FADE_OUT) {
-    start_color = SkColorSetARGB(0, 0, 0, 0);
-    target_color = SK_ColorBLACK;
-    tween_type = gfx::Tween::EASE_IN_OUT;
-  } else {
-    start_color = SK_ColorBLACK;
-    target_color = SkColorSetARGB(0, 0, 0, 0);
-    tween_type = gfx::Tween::EASE_IN_OUT;
-  }
-
-  window_controller_.reset(
-      new ColoredWindowController(parent, "DesktopFade"));
-
-  // Force the window to be directly on top of the desktop.
-  aura::Window* fade_window = window_controller_->GetWidget()->GetNativeView();
-  parent->StackChildBelow(fade_window, position_above);
-  parent->StackChildAbove(fade_window, position_above);
-  window_controller_->SetColor(start_color);
-  views::corewm::SetWindowVisibilityAnimationTransition(
-      window_controller_->GetWidget()->GetNativeView(),
-      views::corewm::ANIMATE_NONE);
-  window_controller_->GetWidget()->Show();
-  {
-    ui::ScopedLayerAnimationSettings scoped_setter(
-        fade_window->layer()->GetAnimator());
-    scoped_setter.AddObserver(this);
-    scoped_setter.SetTweenType(tween_type);
-    scoped_setter.SetTransitionDuration(duration);
-    window_controller_->SetColor(target_color);
-  }
-}
-
-DesktopBackgroundFadeController::~DesktopBackgroundFadeController() {
-  StopObservingImplicitAnimations();
-}
-
-void DesktopBackgroundFadeController::OnImplicitAnimationsCompleted() {
-  window_controller_.reset();
-}
-
-}  // namespace internal
-}  // namespace ash