Add CSSInterpolationType specific ConversionChecker

third_party/WebKit/Source/core/animation/CSSFontWeightInterpolationType.cpp

 // 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.
 
 #include "core/animation/CSSFontWeightInterpolationType.h"
 
 #include <memory>
 #include "core/animation/FontWeightConversion.h"
 #include "core/css/CSSPrimitiveValueMappings.h"
 #include "core/css/resolver/StyleResolverState.h"
 #include "platform/wtf/PtrUtil.h"
 
 namespace blink {
 
-class InheritedFontWeightChecker : public InterpolationType::ConversionChecker {
+class InheritedFontWeightChecker
+    : public CSSInterpolationType::CSSConversionChecker {
  public:
   static std::unique_ptr<InheritedFontWeightChecker> Create(
       FontWeight font_weight) {
     return WTF::WrapUnique(new InheritedFontWeightChecker(font_weight));
   }
 
  private:
   InheritedFontWeightChecker(FontWeight font_weight)
       : font_weight_(font_weight) {}
 
-  bool IsValid(const InterpolationEnvironment& environment,
+  bool IsValid(const StyleResolverState& state,
                const InterpolationValue&) const final {
-    return font_weight_ ==
-           environment.GetState().ParentStyle()->GetFontWeight();
+    return font_weight_ == state.ParentStyle()->GetFontWeight();
   }
 
   const double font_weight_;
 };
 
 InterpolationValue CSSFontWeightInterpolationType::CreateFontWeightValue(
     FontWeight font_weight) const {
   return InterpolationValue(
       InterpolableNumber::Create(FontWeightToDouble(font_weight)));
 }
@@ skipping 61 matching lines @@
 
 void CSSFontWeightInterpolationType::ApplyStandardPropertyValue(
     const InterpolableValue& interpolable_value,
     const NonInterpolableValue*,
     StyleResolverState& state) const {
   state.GetFontBuilder().SetWeight(
       DoubleToFontWeight(ToInterpolableNumber(interpolable_value).Value()));
 }
 
 }  // namespace blink