Oilpan: KeyframeEffect::m_target shouldn't become stale

Source/core/animation/KeyframeEffect.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 65 matching lines @@
     return create(element, EffectInput::convert(element, keyframeDictionaryVector, exceptionState), Timing());
 }
 
 KeyframeEffect::KeyframeEffect(Element* target, EffectModel* model, const Timing& timing, Priority priority, EventDelegate* eventDelegate)
     : AnimationEffect(timing, eventDelegate)
     , m_target(target)
     , m_model(model)
     , m_sampledEffect(nullptr)
     , m_priority(priority)
 {
+#if !ENABLE(OILPAN)
+    if (m_target)
+        m_target->ensureElementAnimations().addEffect(this);
+#endif
 }
 
 KeyframeEffect::~KeyframeEffect()
 {
 }
 
 void KeyframeEffect::attach(Animation* animation)
 {
     if (m_target) {
         m_target->ensureElementAnimations().animations().add(animation);
@@ skipping 265 matching lines @@
 
 DEFINE_TRACE(KeyframeEffect)
 {
     visitor->trace(m_target);
     visitor->trace(m_model);
     visitor->trace(m_sampledEffect);
     AnimationEffect::trace(visitor);
 }
 
 } // namespace blink