WIP: Implement CSS transitions on top of InterpolationTypes instead of AnimatableValues

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 207 matching lines @@
             if (!endTransform->transformOperations().blendedBoundsForBox(originalBox, startTransform->transformOperations(), min, max, &bounds))
                 return false;
             box.expandTo(bounds);
         }
     }
     return true;
 }
 
 bool CompositorAnimations::isCandidateForAnimationOnCompositor(const Timing& timing, const Element& targetElement, const Animation* animationToAdd, const EffectModel& effect, double animationPlaybackRate)
 {
+    // TODO(alancutter): Make transitions work on the compositor
+    if (!effect.isKeyframeEffectModel())
+        return false;
+
     const KeyframeEffectModelBase& keyframeEffect = toKeyframeEffectModelBase(effect);
 
     PropertyHandleSet properties = keyframeEffect.properties();
     if (properties.isEmpty())
         return false;
 
     unsigned transformPropertyCount = 0;
     for (const auto& property : properties) {
         if (!property.isCSSProperty())
             return false;
@@ skipping 338 matching lines @@
             break;
         default:
             NOTREACHED();
         }
         animations.append(std::move(animation));
     }
     ASSERT(!animations.isEmpty());
 }
 
 } // namespace blink