Add ComputedStyle constructor and getter to InterpolationEnvironment

third_party/WebKit/Source/core/animation/CSSLengthInterpolationType.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/CSSLengthInterpolationType.h"
 
 #include "core/animation/LengthPropertyFunctions.h"
 #include "core/animation/css/CSSAnimatableValueFactory.h"
 #include "core/css/CSSCalculationValue.h"
 #include "core/css/resolver/StyleBuilder.h"
@@ skipping 193 matching lines @@
             return nullptr;
         return InterpolationValue(createInterpolablePixels(pixels));
     }
 
     return maybeConvertCSSValue(value);
 }
 
 InterpolationValue CSSLengthInterpolationType::maybeConvertUnderlyingValue(const InterpolationEnvironment& environment) const
 {
     Length underlyingLength;
-    if (!LengthPropertyFunctions::getLength(cssProperty(), *environment.state().style(), underlyingLength))
+    if (!LengthPropertyFunctions::getLength(cssProperty(), environment.style(), underlyingLength))
         return nullptr;
-    return maybeConvertLength(underlyingLength, effectiveZoom(*environment.state().style()));
+    return maybeConvertLength(underlyingLength, effectiveZoom(environment.style()));
 }
 
 void CSSLengthInterpolationType::composite(UnderlyingValueOwner& underlyingValueOwner, double underlyingFraction, const InterpolationValue& value, double interpolationFraction) const
 {
     InterpolationValue& underlying = underlyingValueOwner.mutableValue();
     composite(underlying.interpolableValue, underlying.nonInterpolableValue,
         underlyingFraction, *value.interpolableValue, value.nonInterpolableValue.get());
 }
 
 static bool isPixelsOrPercentOnly(const InterpolableList& values)
@@ skipping 107 matching lines @@
             RefPtr<AnimatableValue> after = CSSAnimatableValueFactory::create(cssProperty(), *state.style());
             ASSERT(before->equals(*after));
 #endif
             return;
         }
     }
     StyleBuilder::applyProperty(cssProperty(), state, *createCSSValue(values, hasPercentage, m_valueRange));
 }
 
 } // namespace blink