Send takeover msg from MT to CC using the animation path.

cc/animation/animation_host.cc

Index: cc/animation/animation_host.cc
diff --git a/cc/animation/animation_host.cc b/cc/animation/animation_host.cc
index 69468ee5308838ae100aaf5c78da0465ce2b4e03..f03ae70a2d989a99ed30b9d67da7e27c0ea04e05 100644
--- a/cc/animation/animation_host.cc
+++ b/cc/animation/animation_host.cc
@@ -395,17 +395,6 @@ bool AnimationHost::HasAnyAnimationTargetingProperty(
   return !!element_animations->GetAnimation(property);
 }
 
-bool AnimationHost::ScrollOffsetIsAnimatingOnImplOnly(
-    ElementId element_id) const {
-  auto element_animations = GetElementAnimationsForElementId(element_id);
-  if (!element_animations)
-    return false;
-
-  Animation* animation =
-      element_animations->GetAnimation(TargetProperty::SCROLL_OFFSET);
-  return animation && animation->is_impl_only();
-}
-
 bool AnimationHost::HasFilterAnimationThatInflatesBounds(
     ElementId element_id) const {
   auto element_animations = GetElementAnimationsForElementId(element_id);