CC Animation: Erase old animation system in UI Compositor.

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 "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 36 matching lines @@
 
 LayerAnimator::LayerAnimator(base::TimeDelta transition_duration)
     : delegate_(NULL),
       preemption_strategy_(IMMEDIATELY_SET_NEW_TARGET),
       is_transition_duration_locked_(false),
       transition_duration_(transition_duration),
       tween_type_(gfx::Tween::LINEAR),
       is_started_(false),
       disable_timer_for_test_(false),
       adding_animations_(false) {
-  if (Layer::UILayerSettings().use_compositor_animation_timelines) {
-    animation_player_ =
-        cc::AnimationPlayer::Create(cc::AnimationIdProvider::NextPlayerId());
-  }
+  animation_player_ =
+      cc::AnimationPlayer::Create(cc::AnimationIdProvider::NextPlayerId());
 }
 
 LayerAnimator::~LayerAnimator() {
   for (size_t i = 0; i < running_animations_.size(); ++i) {
     if (running_animations_[i].is_sequence_alive())
       running_animations_[i].sequence()->OnAnimatorDestroyed();
   }
   ClearAnimationsInternal();
   delegate_ = NULL;
   DCHECK(!animation_player_ || !animation_player_->animation_timeline());
@@ skipping 885 matching lines @@
     const base::WeakPtr<LayerAnimationSequence>& sequence)
     : sequence_(sequence) {
 }
 
 LayerAnimator::RunningAnimation::RunningAnimation(
     const RunningAnimation& other) = default;
 
 LayerAnimator::RunningAnimation::~RunningAnimation() { }
 
 }  // namespace ui