Initial implementation of WorkletAnimation

third_party/WebKit/Source/core/animation/CompositorAnimations.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 359 matching lines @@
          element.GetLayoutObject()->GetCompositingState() ==
              kPaintsIntoOwnBacking;
 }
 
 void CompositorAnimations::StartAnimationOnCompositor(
     const Element& element,
     int group,
     double start_time,
     double time_offset,
     const Timing& timing,
-    const Animation& animation,
+    const Animation* animation,
+    CompositorAnimationPlayer* compositor_player,
     const EffectModel& effect,
     Vector<int>& started_animation_ids,
     double animation_playback_rate) {
+  DCHECK(compositor_player);
   DCHECK(started_animation_ids.IsEmpty());
-  DCHECK(IsCandidateForAnimationOnCompositor(timing, element, &animation,
-                                             effect, animation_playback_rate));
+  DCHECK(IsCandidateForAnimationOnCompositor(timing, element, animation, effect,
+                                             animation_playback_rate));
   DCHECK(CanStartAnimationOnCompositor(element));
 
   const KeyframeEffectModelBase& keyframe_effect =
       ToKeyframeEffectModelBase(effect);
 
   Vector<std::unique_ptr<CompositorAnimation>> animations;
   GetAnimationOnCompositor(timing, group, start_time, time_offset,
                            keyframe_effect, animations,
                            animation_playback_rate);
   DCHECK(!animations.IsEmpty());
   for (auto& compositor_animation : animations) {
     int id = compositor_animation->Id();
-    CompositorAnimationPlayer* compositor_player = animation.CompositorPlayer();
-    DCHECK(compositor_player);
     compositor_player->AddAnimation(std::move(compositor_animation));
     started_animation_ids.push_back(id);
   }
   DCHECK(!started_animation_ids.IsEmpty());
 }
 
 void CompositorAnimations::CancelAnimationOnCompositor(
     const Element& element,
     const Animation& animation,
     int id) {
@@ skipping 237 matching lines @@
     animation->SetTimeOffset(compositor_timing.scaled_time_offset);
     animation->SetDirection(compositor_timing.direction);
     animation->SetPlaybackRate(compositor_timing.playback_rate);
     animation->SetFillMode(compositor_timing.fill_mode);
     animations.push_back(std::move(animation));
   }
   DCHECK(!animations.IsEmpty());
 }
 
 }  // namespace blink