Use the new animation tween type for app list folder animation.

ui/app_list/views/top_icon_animation_view.cc

Index: ui/app_list/views/top_icon_animation_view.cc
diff --git a/ui/app_list/views/top_icon_animation_view.cc b/ui/app_list/views/top_icon_animation_view.cc
index 3c789bff36db9f388939d7939d3690afb3874144..8d27e4fce7fa4f4ed6b6b3c42cc549c091e2e0c3 100644
--- a/ui/app_list/views/top_icon_animation_view.cc
+++ b/ui/app_list/views/top_icon_animation_view.cc
@@ -58,6 +58,7 @@ void TopIconAnimationView::TransformView() {
   // closing a folder.
   ui::ScopedLayerAnimationSettings settings(layer()->GetAnimator());
   settings.AddObserver(this);
+  settings.SetTweenType(gfx::Tween::EASE_IN_OUT_2);
   settings.SetTransitionDuration(
       base::TimeDelta::FromMilliseconds(kFolderTransitionInDurationMs));
   layer()->SetTransform(open_folder_ ? gfx::Transform() : transform);