Add CSSInterpolationType specific ConversionChecker

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

Index: third_party/WebKit/Source/core/animation/CSSRotateInterpolationType.cpp
diff --git a/third_party/WebKit/Source/core/animation/CSSRotateInterpolationType.cpp b/third_party/WebKit/Source/core/animation/CSSRotateInterpolationType.cpp
index 0bc7c384b1af0397694009ab5e820511cf6dc025..aae35738abd9f2d9c97d4d75faaaf67f967f6981 100644
--- a/third_party/WebKit/Source/core/animation/CSSRotateInterpolationType.cpp
+++ b/third_party/WebKit/Source/core/animation/CSSRotateInterpolationType.cpp
@@ -150,17 +150,17 @@ InterpolationValue ConvertRotation(const OptionalRotation& rotation) {
                             CSSRotateNonInterpolableValue::Create(rotation));
 }
 
-class InheritedRotationChecker : public InterpolationType::ConversionChecker {
+class InheritedRotationChecker
+    : public CSSInterpolationType::CSSConversionChecker {
  public:
   static std::unique_ptr<InheritedRotationChecker> Create(
       const OptionalRotation& inherited_rotation) {
     return WTF::WrapUnique(new InheritedRotationChecker(inherited_rotation));
   }
 
-  bool IsValid(const InterpolationEnvironment& environment,
+  bool IsValid(const StyleResolverState& state,
                const InterpolationValue& underlying) const final {
-    OptionalRotation inherited_rotation =
-        GetRotation(*environment.GetState().ParentStyle());
+    OptionalRotation inherited_rotation = GetRotation(*state.ParentStyle());
     if (inherited_rotation_.IsNone() || inherited_rotation.IsNone())
       return inherited_rotation.IsNone() == inherited_rotation.IsNone();
     return inherited_rotation_.GetRotation().axis ==