Make InterpolationEnvironment virutal

third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp

Index: third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp b/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
index 509ffec7c9efdb97314d05fec8a8dfb8565b54a2..4ad4ef1d1cae45de5215e1e44ec7de5619c00202 100644
--- a/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
@@ -35,9 +35,9 @@
 #include "core/MediaTypeNames.h"
 #include "core/StylePropertyShorthand.h"
 #include "core/animation/AnimationTimeline.h"
+#include "core/animation/CSSInterpolationEnvironment.h"
 #include "core/animation/CSSInterpolationTypesMap.h"
 #include "core/animation/ElementAnimations.h"
-#include "core/animation/InterpolationEnvironment.h"
 #include "core/animation/InvalidatableInterpolation.h"
 #include "core/animation/KeyframeEffect.h"
 #include "core/animation/LegacyStyleInterpolation.h"
@@ -1235,7 +1235,7 @@ void StyleResolver::ApplyAnimatedProperties(
     const Interpolation& interpolation = *entry.value.front();
     if (interpolation.IsInvalidatableInterpolation()) {
       CSSInterpolationTypesMap map(state.GetDocument().GetPropertyRegistry());
-      InterpolationEnvironment environment(map, state);
+      CSSInterpolationEnvironment environment(map, state);
       InvalidatableInterpolation::ApplyStack(entry.value, environment);
     } else if (interpolation.IsTransitionInterpolation()) {
       ToTransitionInterpolation(interpolation).Apply(state);