CC Animation: Let MutatorHostClient deals with elements instead of layers.

ui/compositor/layer_animator.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/compositor/layer_animator.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 164 matching lines @@
 
   cc::AnimationTimeline* timeline = compositor->GetAnimationTimeline();
   DCHECK(timeline);
 
   const int layer_id = animation_player_->element_id();
 
   // Store a reference to ElementAnimations (if any)
   // so it may be picked up in LayerAnimator::SetCompositor.
   if (layer_id) {
     element_animations_state_ =
-        timeline->animation_host()->GetElementAnimationsForLayerId(layer_id);
+        timeline->animation_host()->GetElementAnimationsForElementId(layer_id);
   }
 
   DetachLayerFromAnimationPlayer();
 
   timeline->DetachPlayer(animation_player_);
 }
 
 void LayerAnimator::AttachLayerToAnimationPlayer(int layer_id) {
   if (!animation_player_->element_id())
     animation_player_->AttachLayer(layer_id);
@@ skipping 768 matching lines @@
     const base::WeakPtr<LayerAnimationSequence>& sequence)
     : sequence_(sequence) {
 }
 
 LayerAnimator::RunningAnimation::RunningAnimation(
     const RunningAnimation& other) = default;
 
 LayerAnimator::RunningAnimation::~RunningAnimation() { }
 
 }  // namespace ui