[ash-md] Fades overview header in and out

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
index 994d85497de04427c9b147aac6ea099c4584bc38..346b85fa4e57eaf2c2641286630ad4a1375f8a71 100644
--- a/ash/wm/overview/scoped_overview_animation_settings_aura.cc
+++ b/ash/wm/overview/scoped_overview_animation_settings_aura.cc
@@ -15,7 +15,7 @@ namespace ash {
 namespace {
 
 // The time duration for transformation animations.
-const int kTransitionMilliseconds = 200;
+const int kTransitionMilliseconds = 300;
 
 // The time duration for fading out when closing an item. Only used with
 // Material Design.
@@ -26,13 +26,15 @@ const int kCloseFadeOutMillisecondsMd = 50;
 const int kCloseScaleMillisecondsMd = 100;
 
 // The time duration for widgets to fade in.
-const int kFadeInMilliseconds = 80;
+const int kFadeInMilliseconds = 160;
 
 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(kTransitionMilliseconds);
+    case OVERVIEW_ANIMATION_FADE_IN_HEADER:
       return base::TimeDelta::FromMilliseconds(kFadeInMilliseconds);
     case OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS:
     case OVERVIEW_ANIMATION_RESTORE_WINDOW:
@@ -53,27 +55,35 @@ ScopedOverviewAnimationSettingsAura::ScopedOverviewAnimationSettingsAura(
     OverviewAnimationType animation_type,
     aura::Window* window)
     : animation_settings_(window->layer()->GetAnimator()) {
+  const bool material = ash::MaterialDesignController::IsOverviewMaterial();
   switch (animation_type) {
     case OVERVIEW_ANIMATION_NONE:
       animation_settings_.SetPreemptionStrategy(
           ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
       break;
     case OVERVIEW_ANIMATION_ENTER_OVERVIEW_MODE_FADE_IN:
-      window->layer()->GetAnimator()->SchedulePauseForProperties(
-          GetAnimationDuration(
-              OverviewAnimationType::OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS),
-          ui::LayerAnimationElement::OPACITY);
+      if (!material) {
+        window->layer()->GetAnimator()->SchedulePauseForProperties(
+            GetAnimationDuration(OverviewAnimationType::
+                                     OVERVIEW_ANIMATION_LAY_OUT_SELECTOR_ITEMS),
+            ui::LayerAnimationElement::OPACITY);
+      }
       animation_settings_.SetPreemptionStrategy(
           ui::LayerAnimator::REPLACE_QUEUED_ANIMATIONS);
+      if (material)
+        animation_settings_.SetTweenType(gfx::Tween::EASE_OUT);
+      break;
+    case OVERVIEW_ANIMATION_FADE_IN_HEADER:
+      animation_settings_.SetPreemptionStrategy(
+          ui::LayerAnimator::ENQUEUE_NEW_ANIMATION);
+      animation_settings_.SetTweenType(gfx::Tween::EASE_OUT);
       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(
-          ash::MaterialDesignController::IsOverviewMaterial()
-              ? gfx::Tween::EASE_IN_2
-              : gfx::Tween::FAST_OUT_SLOW_IN);
+      animation_settings_.SetTweenType(material ? gfx::Tween::EASE_IN_OUT
+                                                : gfx::Tween::FAST_OUT_SLOW_IN);
       break;
     case OVERVIEW_ANIMATION_CLOSING_SELECTOR_ITEM:
     case OVERVIEW_ANIMATION_CLOSE_SELECTOR_ITEM: