Remove unused code in DeferredLegacyStyleInterpolation

Review-Url: https://codereview.chromium.org/2042213002
Cr-Commit-Position: refs/heads/master@{#398261}

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

@@ -4,8 +4,6 @@
 
 #include "core/animation/DeferredLegacyStyleInterpolation.h"
 
-#include "core/animation/ElementAnimations.h"
-#include "core/animation/css/CSSAnimatableValueFactory.h"
 #include "core/css/CSSBasicShapeValues.h"
 #include "core/css/CSSImageValue.h"
 #include "core/css/CSSPrimitiveValue.h"
@@ -14,34 +12,9 @@
 #include "core/css/CSSShadowValue.h"
 #include "core/css/CSSValueList.h"
 #include "core/css/CSSValuePair.h"
-#include "core/css/resolver/StyleResolver.h"
-#include "core/css/resolver/StyleResolverState.h"
 
 namespace blink {
 
-void DeferredLegacyStyleInterpolation::apply(StyleResolverState& state) const
-{
-    if (m_outdated || !state.element()->elementAnimations() || !state.element()->elementAnimations()->isAnimationStyleChange()) {
-        RefPtr<AnimatableValue> startAnimatableValue;
-        RefPtr<AnimatableValue> endAnimatableValue;
-
-        // Snapshot underlying values for neutral keyframes first because non-neutral keyframes will mutate the StyleResolverState.
-        if (!m_endCSSValue) {
-            endAnimatableValue = StyleResolver::createAnimatableValueSnapshot(state, m_id, m_endCSSValue.get());
-            startAnimatableValue = StyleResolver::createAnimatableValueSnapshot(state, m_id, m_startCSSValue.get());
-        } else {
-            startAnimatableValue = StyleResolver::createAnimatableValueSnapshot(state, m_id, m_startCSSValue.get());
-            endAnimatableValue = StyleResolver::createAnimatableValueSnapshot(state, m_id, m_endCSSValue.get());
-        }
-
-        m_innerInterpolation = LegacyStyleInterpolation::create(startAnimatableValue, endAnimatableValue, m_id);
-        m_outdated = false;
-    }
-
-    m_innerInterpolation->interpolate(m_cachedIteration, m_cachedFraction);
-    m_innerInterpolation->apply(state);
-}
-
 bool DeferredLegacyStyleInterpolation::interpolationRequiresStyleResolve(const CSSValue& value)
 {
     // FIXME: should not require resolving styles for inherit/initial/unset.

third_party/WebKit/Source/core/animation/DeferredLegacyStyleInterpolation.h

@@ -6,9 +6,7 @@
 #define DeferredLegacyStyleInterpolation_h
 
 #include "core/CoreExport.h"
-#include "core/animation/LegacyStyleInterpolation.h"
-#include "core/animation/StyleInterpolation.h"
-#include "core/css/CSSValue.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
@@ -21,18 +19,14 @@ class CSSPrimitiveValue;
 class CSSQuadValue;
 class CSSShadowValue;
 class CSSSVGDocumentValue;
+class CSSValue;
 class CSSValueList;
 class CSSValuePair;
 
-class CORE_EXPORT DeferredLegacyStyleInterpolation : public StyleInterpolation {
+// TODO(alancutter): Remove this once compositor keyframes are no longer snapshot during EffectInput::convert().
+class CORE_EXPORT DeferredLegacyStyleInterpolation {
 public:
-    static PassRefPtr<DeferredLegacyStyleInterpolation> create(CSSValue* start, CSSValue* end, CSSPropertyID id)
-    {
-        return adoptRef(new DeferredLegacyStyleInterpolation(start, end, id));
-    }
-
-    void apply(StyleResolverState&) const override;
-
+    STATIC_ONLY(DeferredLegacyStyleInterpolation);
     static bool interpolationRequiresStyleResolve(const CSSValue&);
     static bool interpolationRequiresStyleResolve(const CSSPrimitiveValue&);
     static bool interpolationRequiresStyleResolve(const CSSImageValue&);
@@ -45,20 +39,6 @@ public:
     static bool interpolationRequiresStyleResolve(const CSSBasicShapePolygonValue&);
     static bool interpolationRequiresStyleResolve(const CSSBasicShapeInsetValue&);
     static bool interpolationRequiresStyleResolve(const CSSQuadValue&);
-
-private:
-    DeferredLegacyStyleInterpolation(CSSValue* start, CSSValue* end, CSSPropertyID id)
-        : StyleInterpolation(InterpolableNumber::create(0), InterpolableNumber::create(1), id)
-        , m_startCSSValue(start)
-        , m_endCSSValue(end)
-        , m_outdated(true)
-    {
-    }
-
-    Persistent<CSSValue> m_startCSSValue;
-    Persistent<CSSValue> m_endCSSValue;
-    mutable RefPtr<LegacyStyleInterpolation> m_innerInterpolation;
-    mutable bool m_outdated;
 };
 
 } // namespace blink

third_party/WebKit/Source/core/animation/css/CSSAnimations.cpp

@@ -34,10 +34,10 @@
 #include "core/animation/Animation.h"
 #include "core/animation/AnimationTimeline.h"
 #include "core/animation/CompositorAnimations.h"
-#include "core/animation/DeferredLegacyStyleInterpolation.h"
 #include "core/animation/ElementAnimations.h"
 #include "core/animation/Interpolation.h"
 #include "core/animation/KeyframeEffectModel.h"
+#include "core/animation/LegacyStyleInterpolation.h"
 #include "core/animation/css/CSSAnimatableValueFactory.h"
 #include "core/css/CSSKeyframeRule.h"
 #include "core/css/CSSPropertyEquality.h"