[ash] Cleanup of ScopedOverviewAnimationSettings

ash/wm/overview/scoped_overview_animation_settings_aura.cc

Index: ash/wm/overview/scoped_overview_animation_settings_aura.cc
diff --git a/ash/wm/overview/scoped_overview_animation_settings_aura.cc b/ash/wm/overview/scoped_overview_animation_settings_aura.cc
deleted file mode 100644
index f7f76fcdcd55a6bbab63a35745b7964b00d3420d..0000000000000000000000000000000000000000
--- a/ash/wm/overview/scoped_overview_animation_settings_aura.cc
+++ /dev/null
@@ -1,175 +0,0 @@
-// Copyright 2014 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/overview/scoped_overview_animation_settings_aura.h"
-
-#include "base/lazy_instance.h"
-#include "base/metrics/histogram_macros.h"
-#include "base/time/time.h"
-#include "ui/aura/window.h"
-#include "ui/compositor/layer.h"
-#include "ui/compositor/layer_animation_observer.h"
-#include "ui/compositor/scoped_layer_animation_settings.h"
-#include "ui/gfx/animation/tween.h"
-
-namespace ash {
-
-namespace {
-
-// The time duration for transformation animations.
-const int kTransitionMilliseconds = 300;
-
-// The time duration for fading out when closing an item.
-const int kCloseFadeOutMilliseconds = 50;
-
-// The time duration for scaling down when an item is closed.
-const int kCloseScaleMilliseconds = 100;
-
-// The time duration for widgets to fade in.
-const int kFadeInMilliseconds = 60;
-
-// The time duration for widgets to fade out.
-const int kFadeOutDelayMilliseconds = kTransitionMilliseconds * 1 / 5;
-const int kFadeOutMilliseconds = kTransitionMilliseconds * 3 / 5;
-
-base::TimeDelta GetAnimationDuration(OverviewAnimationType animation_type) {
-  switch (animation_type) {
-    case OVERVIEW_ANIMATION_NONE:
-      return base::TimeDelta();
-    case OVERVIEW_ANIMATION_ENTER_OVERVIEW_MODE_FADE_IN:
-      return base::TimeDelta::FromMilliseconds(kFadeInMilliseconds);
-    case OVERVIEW_ANIMATION_EXIT_OVERVIEW_MODE_FADE_OUT:
-      return base::TimeDelta::FromMilliseconds(kFadeOutMilliseconds);
-    case OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS:
-    case OVERVIEW_ANIMATION_RESTORE_WINDOW:
-      return base::TimeDelta::FromMilliseconds(kTransitionMilliseconds);
-    case OVERVIEW_ANIMATION_CLOSING_SELECTOR_ITEM:
-      return base::TimeDelta::FromMilliseconds(kCloseScaleMilliseconds);
-    case OVERVIEW_ANIMATION_CLOSE_SELECTOR_ITEM:
-      return base::TimeDelta::FromMilliseconds(kCloseFadeOutMilliseconds);
-  }
-  NOTREACHED();
-  return base::TimeDelta();
-}
-
-class OverviewEnterMetricsReporter : public ui::AnimationMetricsReporter {
- public:
-  OverviewEnterMetricsReporter() = default;
-  ~OverviewEnterMetricsReporter() override = default;
-
-  void Report(int value) override {
-    UMA_HISTOGRAM_PERCENTAGE("Ash.WindowSelector.AnimationSmoothness.Enter",
-                             value);
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(OverviewEnterMetricsReporter);
-};
-
-class OverviewExitMetricsReporter : public ui::AnimationMetricsReporter {
- public:
-  OverviewExitMetricsReporter() = default;
-  ~OverviewExitMetricsReporter() override = default;
-
-  void Report(int value) override {
-    UMA_HISTOGRAM_PERCENTAGE("Ash.WindowSelector.AnimationSmoothness.Exit",
-                             value);
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(OverviewExitMetricsReporter);
-};
-
-class OverviewCloseMetricsReporter : public ui::AnimationMetricsReporter {
- public:
-  OverviewCloseMetricsReporter() = default;
-  ~OverviewCloseMetricsReporter() override = default;
-
-  void Report(int value) override {
-    UMA_HISTOGRAM_PERCENTAGE("Ash.WindowSelector.AnimationSmoothness.Close",
-                             value);
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(OverviewCloseMetricsReporter);
-};
-
-base::LazyInstance<OverviewEnterMetricsReporter>::Leaky g_reporter_enter =
-    LAZY_INSTANCE_INITIALIZER;
-base::LazyInstance<OverviewExitMetricsReporter>::Leaky g_reporter_exit =
-    LAZY_INSTANCE_INITIALIZER;
-base::LazyInstance<OverviewCloseMetricsReporter>::Leaky g_reporter_close =
-    LAZY_INSTANCE_INITIALIZER;
-
-ui::AnimationMetricsReporter* GetMetricsReporter(
-    OverviewAnimationType animation_type) {
-  switch (animation_type) {
-    case OVERVIEW_ANIMATION_NONE:
-      return nullptr;
-    case OVERVIEW_ANIMATION_ENTER_OVERVIEW_MODE_FADE_IN:
-    case OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS:
-      return g_reporter_enter.Pointer();
-    case OVERVIEW_ANIMATION_EXIT_OVERVIEW_MODE_FADE_OUT:
-    case OVERVIEW_ANIMATION_RESTORE_WINDOW:
-      return g_reporter_exit.Pointer();
-    case OVERVIEW_ANIMATION_CLOSING_SELECTOR_ITEM:
-    case OVERVIEW_ANIMATION_CLOSE_SELECTOR_ITEM:
-      return g_reporter_close.Pointer();
-  }
-  NOTREACHED();
-  return nullptr;
-}
-
-}  // namespace
-
-ScopedOverviewAnimationSettingsAura::ScopedOverviewAnimationSettingsAura(
-    OverviewAnimationType animation_type,
-    aura::Window* window)
-    : animation_settings_(new ui::ScopedLayerAnimationSettings(
-          window->layer()->GetAnimator())) {
-  switch (animation_type) {
-    case OVERVIEW_ANIMATION_NONE:
-      animation_settings_->SetPreemptionStrategy(
-          ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
-      break;
-    case OVERVIEW_ANIMATION_ENTER_OVERVIEW_MODE_FADE_IN:
-      animation_settings_->SetTweenType(gfx::Tween::EASE_IN);
-      animation_settings_->SetPreemptionStrategy(
-          ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
-      break;
-    case OVERVIEW_ANIMATION_EXIT_OVERVIEW_MODE_FADE_OUT:
-      window->layer()->GetAnimator()->SchedulePauseForProperties(
-          base::TimeDelta::FromMilliseconds(kFadeOutDelayMilliseconds),
-          ui::LayerAnimationElement::OPACITY);
-      animation_settings_->SetTweenType(gfx::Tween::EASE_OUT);
-      animation_settings_->SetPreemptionStrategy(
-          ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
-      break;
-    case OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS:
-    case OVERVIEW_ANIMATION_RESTORE_WINDOW:
-      animation_settings_->SetPreemptionStrategy(
-          ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
-      animation_settings_->SetTweenType(gfx::Tween::EASE_OUT);
-      break;
-    case OVERVIEW_ANIMATION_CLOSING_SELECTOR_ITEM:
-    case OVERVIEW_ANIMATION_CLOSE_SELECTOR_ITEM:
-      animation_settings_->SetPreemptionStrategy(
-          ui::LayerAnimator::ENQUEUE_NEW_ANIMATION);
-      animation_settings_->SetTweenType(gfx::Tween::EASE_OUT);
-      break;
-  }
-  animation_settings_->SetTransitionDuration(
-      GetAnimationDuration(animation_type));
-  animation_settings_->SetAnimationMetricsReporter(
-      GetMetricsReporter(animation_type));
-}
-
-ScopedOverviewAnimationSettingsAura::~ScopedOverviewAnimationSettingsAura() {}
-
-void ScopedOverviewAnimationSettingsAura::AddObserver(
-    ui::ImplicitAnimationObserver* observer) {
-  animation_settings_->AddObserver(observer);
-}
-
-}  // namespace ash