[Sketch] Animations: Torpedo the old intrusive animation system.

Source/core/animation/AnimationPlayer.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 836 matching lines @@
 }
 
 void AnimationPlayer::endUpdatingState()
 {
     ASSERT(m_stateIsBeingUpdated);
     m_stateIsBeingUpdated = false;
 }
 
 void AnimationPlayer::createCompositorPlayer()
 {
-    if (RuntimeEnabledFeatures::compositorAnimationTimelinesEnabled() && !m_compositorPlayer && Platform::current()->compositorSupport()) {
+    if (!m_compositorPlayer) {
         m_compositorPlayer = adoptPtr(Platform::current()->compositorSupport()->createAnimationPlayer());
         ASSERT(m_compositorPlayer);
         m_compositorPlayer->setAnimationDelegate(this);
         attachCompositorTimeline();
     }
 
     attachCompositedLayers();
 }
 
 void AnimationPlayer::destroyCompositorPlayer()
@@ skipping 20 matching lines @@
 {
     if (m_compositorPlayer) {
         WebCompositorAnimationTimeline* timeline = m_timeline ? m_timeline->compositorTimeline() : nullptr;
         if (timeline)
             timeline->playerDestroyed(*this);
     }
 }
 
 void AnimationPlayer::attachCompositedLayers()
 {
-    if (!RuntimeEnabledFeatures::compositorAnimationTimelinesEnabled() || !m_compositorPlayer)
+    if (!m_compositorPlayer)
         return;
 
     ASSERT(m_content);
     ASSERT(m_content->isAnimation());
 
     if (toAnimation(m_content.get())->canAttachCompositedLayers())
         toAnimation(m_content.get())->attachCompositedLayers();
 }
 
 void AnimationPlayer::detachCompositedLayers()
 {
     if (m_compositorPlayer && m_compositorPlayer->isLayerAttached())
         m_compositorPlayer->detachLayer();
 }
 
 void AnimationPlayer::notifyAnimationStarted(double monotonicTime, int group)
 {
-    ASSERT(RuntimeEnabledFeatures::compositorAnimationTimelinesEnabled());
     timeline()->document()->compositorPendingAnimations().notifyCompositorAnimationStarted(monotonicTime, group);
 }
 
 AnimationPlayer::PlayStateUpdateScope::PlayStateUpdateScope(AnimationPlayer& player, TimingUpdateReason reason, CompositorPendingChange compositorPendingChange)
     : m_player(player)
     , m_initialPlayState(m_player->playStateInternal())
     , m_compositorPendingChange(compositorPendingChange)
 {
     m_player->beginUpdatingState();
     m_player->updateCurrentTimingState(reason);
@@ skipping 96 matching lines @@
     visitor->trace(m_content);
     visitor->trace(m_timeline);
     visitor->trace(m_pendingFinishedEvent);
     visitor->trace(m_finishedPromise);
     visitor->trace(m_readyPromise);
     EventTargetWithInlineData::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace