CC Animations: Allow AnimationPlayers attached to layers but not attached to timelines/host to die …

cc/animation/animation_player.cc

 // Copyright 2015 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 "cc/animation/animation_player.h"
 
 #include "cc/animation/animation_delegate.h"
 #include "cc/animation/animation_host.h"
 #include "cc/animation/animation_timeline.h"
 #include "cc/animation/element_animations.h"
@@ skipping 11 matching lines @@
       element_animations_(),
       layer_animation_delegate_(),
       id_(id),
       layer_id_(0) {
   DCHECK(id_);
 }
 
 AnimationPlayer::~AnimationPlayer() {
   DCHECK(!animation_timeline_);
   DCHECK(!element_animations_);
-  DCHECK(!layer_id_);
 }
 
 scoped_refptr<AnimationPlayer> AnimationPlayer::CreateImplInstance() const {
   scoped_refptr<AnimationPlayer> player = AnimationPlayer::Create(id());
   return player;
 }
 
 void AnimationPlayer::SetAnimationHost(AnimationHost* animation_host) {
   animation_host_ = animation_host;
 }
@@ skipping 137 matching lines @@
                                                        target_property, group);
 }
 
 void AnimationPlayer::SetNeedsCommit() {
   DCHECK(animation_host_);
   animation_host_->SetNeedsCommit();
   animation_host_->SetNeedsRebuildPropertyTrees();
 }
 
 }  // namespace cc