Don't animate caret-color: auto

third_party/WebKit/Source/core/animation/CSSColorInterpolationType.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CSSColorInterpolationType_h
 #define CSSColorInterpolationType_h
 
 #include "core/CSSValueKeywords.h"
 #include "core/animation/CSSInterpolationType.h"
 #include "platform/graphics/Color.h"
 #include <memory>
 
 namespace blink {
 
 class StyleColor;
+struct OptionalStyleColor;
 
 class CSSColorInterpolationType : public CSSInterpolationType {
  public:
   CSSColorInterpolationType(PropertyHandle property)
       : CSSInterpolationType(property) {}
 
   InterpolationValue maybeConvertStandardPropertyUnderlyingValue(
       const ComputedStyle&) const final;
   void applyStandardPropertyValue(const InterpolableValue&,
                                   const NonInterpolableValue*,
@@ skipping 15 matching lines @@
  private:
   InterpolationValue maybeConvertNeutral(const InterpolationValue& underlying,
                                          ConversionCheckers&) const final;
   InterpolationValue maybeConvertInitial(const StyleResolverState&,
                                          ConversionCheckers&) const final;
   InterpolationValue maybeConvertInherit(const StyleResolverState&,
                                          ConversionCheckers&) const final;
   InterpolationValue maybeConvertValue(const CSSValue&,
                                        const StyleResolverState*,
                                        ConversionCheckers&) const final;
-  InterpolationValue convertStyleColorPair(const StyleColor&,
-                                           const StyleColor&) const;
+  InterpolationValue convertStyleColorPair(const OptionalStyleColor&,
+                                           const OptionalStyleColor&) const;
 
   const CSSValue* createCSSValue(const InterpolableValue&,
                                  const NonInterpolableValue*,
                                  const StyleResolverState&) const final;
 };
 
 }  // namespace blink
 
 #endif  // CSSColorInterpolationType_h