[CodeHealth] Move CheckUsesCompositedScrolling to CompositorAnimations

This was missed in crrev.com/c/2204224 and it should be no-op.

Bug: None
Change-Id: Iac8597d4693a95eae50c9e62f63fe41c71de598e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2204649Reviewed-by: Majid Valipour <majidvp@chromium.org>
Commit-Queue: Yi Gu <yigu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#772312}

third_party/blink/renderer/core/animation/animation.cc

@@ -179,15 +179,6 @@ AtomicString GetCSSTransitionCSSPropertyName(const Animation* animation) {
       .GetCSSPropertyName()
       .ToAtomicString();
 }
-
-bool CheckElementComposited(const Node& target) {
-  DCHECK(target.GetDocument().Lifecycle().GetState() >=
-         DocumentLifecycle::kCompositingClean);
-  auto* layout_box_model_object = target.GetLayoutBoxModelObject();
-  if (!layout_box_model_object)
-    return false;
-  return layout_box_model_object->UsesCompositedScrolling();
-}
 }  // namespace
 
 Animation* Animation::Create(AnimationEffect* effect,
@@ -1697,7 +1688,7 @@ Animation::CheckCanStartAnimationOnCompositorInternal() const {
   // TODO(crbug.com/476553): Once all ScrollNodes including uncomposited ones
   // are in the compositor, the animation should be composited.
   if (timeline_->IsScrollTimeline() &&
-      !CheckElementComposited(
+      !CompositorAnimations::CheckUsesCompositedScrolling(
           *To<ScrollTimeline>(*timeline_).ResolvedScrollSource()))
     reasons |= CompositorAnimations::kTimelineSourceHasInvalidCompositingState;
 

third_party/blink/renderer/core/animation/compositor_animations.cc

@@ -775,4 +775,13 @@ void CompositorAnimations::GetAnimationOnCompositor(
   DCHECK(!keyframe_models.IsEmpty());
 }
 
+bool CompositorAnimations::CheckUsesCompositedScrolling(const Node& target) {
+  DCHECK(target.GetDocument().Lifecycle().GetState() >=
+         DocumentLifecycle::kCompositingClean);
+  auto* layout_box_model_object = target.GetLayoutBoxModelObject();
+  if (!layout_box_model_object)
+    return false;
+  return layout_box_model_object->UsesCompositedScrolling();
+}
+
 }  // namespace blink

third_party/blink/renderer/core/animation/compositor_animations.h

@@ -161,6 +161,8 @@ class CORE_EXPORT CompositorAnimations {
   static CompositorElementIdNamespace CompositorElementNamespaceForProperty(
       CSSPropertyID property);
 
+  static bool CheckUsesCompositedScrolling(const Node& target);
+
  private:
   static FailureReasons CheckCanStartEffectOnCompositor(
       const Timing&,