Clean up stale FIXMEs and TODOs in core/animation

third_party/WebKit/Source/core/animation/animatable/AnimatableImage.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 18 matching lines @@
  */
 
 #include "core/animation/animatable/AnimatableImage.h"
 
 #include "core/css/CSSImageValue.h"
 #include "core/style/StyleGeneratedImage.h"
 #include "wtf/MathExtras.h"
 
 namespace blink {
 
-// FIXME: Once cross-fade works on generated image types, remove this method.

[alancutter (OOO until 2018), 2016/09/27 01:14:14]

AnimatableValues are deprecated.

 bool AnimatableImage::usesDefaultInterpolationWith(const AnimatableValue* value) const
 {
     if (!m_value->isImageValue())
         return true;
     if (!toAnimatableImage(value)->toCSSValue()->isImageValue())
         return true;
     return false;
 }
 
 PassRefPtr<AnimatableValue> AnimatableImage::interpolateTo(const AnimatableValue* value, double fraction) const
 {
     if (fraction <= 0 || fraction >= 1 || usesDefaultInterpolationWith(value))
         return defaultInterpolateTo(this, value, fraction);
 
     CSSValue* fromValue = toCSSValue();
     CSSValue* toValue = toAnimatableImage(value)->toCSSValue();
 
     return create(CSSCrossfadeValue::create(fromValue, toValue, CSSPrimitiveValue::create(fraction, CSSPrimitiveValue::UnitType::Number)));
 }
 
 bool AnimatableImage::equalTo(const AnimatableValue* value) const
 {
     return m_value->equals(*toAnimatableImage(value)->m_value.get());
 }
 
 } // namespace blink