Delete unused AnimatableValue code

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

Index: third_party/WebKit/Source/core/animation/LegacyStyleInterpolation.cpp
diff --git a/third_party/WebKit/Source/core/animation/LegacyStyleInterpolation.cpp b/third_party/WebKit/Source/core/animation/LegacyStyleInterpolation.cpp
index 7280279da18b08bc691fb7fe4dfe0a8e5fa1eca7..1eacbe2427aca595f3a4b39f874a5e88c9c5b425 100644
--- a/third_party/WebKit/Source/core/animation/LegacyStyleInterpolation.cpp
+++ b/third_party/WebKit/Source/core/animation/LegacyStyleInterpolation.cpp
@@ -4,6 +4,9 @@
 
 #include "core/animation/LegacyStyleInterpolation.h"
 
+#include "core/css/resolver/AnimatedStyleBuilder.h"
+#include "core/css/resolver/StyleResolverState.h"
+
 #include <memory>
 
 namespace blink {
@@ -48,6 +51,11 @@ LegacyStyleInterpolation::LegacyStyleInterpolation(
   RELEASE_ASSERT(typesMatch(m_start.get(), m_end.get()));
 }
 
+void LegacyStyleInterpolation::apply(StyleResolverState& state) const {
+  AnimatedStyleBuilder::applyProperty(id(), *state.style(),
+                                      currentValue().get());
+}
+
 void LegacyStyleInterpolation::interpolate(int iteration, double fraction) {
   if (m_cachedFraction != fraction || m_cachedIteration != iteration) {
     m_start->interpolate(*m_end, fraction, *m_cachedValue);