Animation: Add template for ListStyleInterpolation

Source/core/animation/LengthPairStyleInterpolation.cpp

 // Copyright 2014 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 "config.h"
 #include "core/animation/LengthPairStyleInterpolation.h"
 
 #include "core/animation/LengthStyleInterpolation.h"
 #include "core/css/Pair.h"
 #include "core/css/resolver/StyleBuilder.h"
@@ skipping 12 matching lines @@
     ASSERT(pair);
 
     result->set(0, LengthStyleInterpolation::lengthToInterpolableValue(*pair->first()));
     result->set(1, LengthStyleInterpolation::lengthToInterpolableValue(*pair->second()));
     return result.release();
 }
 
 PassRefPtrWillBeRawPtr<CSSValue> LengthPairStyleInterpolation::interpolableValueToLengthPair(InterpolableValue* value, InterpolationRange range)
 {
     InterpolableList* lengthPair = toInterpolableList(value);
-    RefPtrWillBeRawPtr<CSSPrimitiveValue> first = (LengthStyleInterpolation::interpolableValueToLength(lengthPair->get(0), range));
-    RefPtrWillBeRawPtr<CSSPrimitiveValue> second = (LengthStyleInterpolation::interpolableValueToLength(lengthPair->get(1), range));
+    RefPtrWillBeRawPtr<CSSPrimitiveValue> first = (LengthStyleInterpolation::interpolableValueToLength(*lengthPair->get(0), range));
+    RefPtrWillBeRawPtr<CSSPrimitiveValue> second = (LengthStyleInterpolation::interpolableValueToLength(*lengthPair->get(1), range));
     RefPtrWillBeRawPtr<Pair> result = Pair::create(first, second, Pair::KeepIdenticalValues);
 
     return CSSPrimitiveValue::create(result.release());
 }
 
 void LengthPairStyleInterpolation::apply(StyleResolverState& state) const
 {
     StyleBuilder::applyProperty(m_id, state, interpolableValueToLengthPair(m_cachedValue.get(), m_range).get());
 }
 
 } // namespace blink