Animations: Disable compositor when timeline playback rate is set

Source/core/animation/AnimationTimeline.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 218 matching lines @@
 void AnimationTimeline::setOutdatedAnimationPlayer(AnimationPlayer* player)
 {
     ASSERT(player->outdated());
     m_playersNeedingUpdate.add(player);
     if (m_document && m_document->page() && !m_document->page()->animator().isServicingAnimations())
         m_timing->serviceOnNextFrame();
 }
 
 void AnimationTimeline::setPlaybackRate(double playbackRate)
 {
-    // FIXME: need to invalidate compositor animations
     m_currentTimeSnapshot = currentTimeInternal();
     m_rawCurrentTimeSnapshot = m_document->animationClock().currentTime() - zeroTime();
     m_playbackRate = playbackRate;
+    for (const auto& player : m_players) {
+        player->setCompositorPending(true);
+    }
 }
 
 double AnimationTimeline::playbackRate() const
 {
     return m_playbackRate;
 }
 
 #if !ENABLE(OILPAN)
 void AnimationTimeline::detachFromDocument()
 {
     // FIXME: AnimationTimeline should keep Document alive.
     m_document = nullptr;
 }
 #endif
 
 void AnimationTimeline::trace(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_document);
     visitor->trace(m_timing);
     visitor->trace(m_playersNeedingUpdate);
     visitor->trace(m_players);
 #endif
 }
 
 } // namespace