CC Animation: Erase EaseTimingFunction helpers.

cc/input/top_controls_manager.cc

Index: cc/input/top_controls_manager.cc
diff --git a/cc/input/top_controls_manager.cc b/cc/input/top_controls_manager.cc
index e38076bc793917d4cfc8265ad21a1c1811bf54e4..408b03dcef734e7524d7a28a6802d4508f165734 100644
--- a/cc/input/top_controls_manager.cc
+++ b/cc/input/top_controls_manager.cc
@@ -202,7 +202,8 @@ void TopControlsManager::SetupAnimation(AnimationDirection direction) {
   top_controls_animation_->AddKeyframe(FloatKeyframe::Create(
       start_time + base::TimeDelta::FromMilliseconds(kShowHideMaxDurationMs),
       TopControlsShownRatio() + max_ending_ratio,
-      EaseTimingFunction::Create()));
+      CubicBezierTimingFunction::CreatePreset(
+          CubicBezierTimingFunction::EaseType::EASE)));
   animation_direction_ = direction;
   client_->DidChangeTopControlsPosition();
 }