Web Animations API: Length properties responsive to style changes

Source/core/animation/Interpolation.h

Index: Source/core/animation/Interpolation.h
diff --git a/Source/core/animation/Interpolation.h b/Source/core/animation/Interpolation.h
index 206310c9875007c2688dfc33ae928371aa66b074..6a3cd7a5a4019c31ccf5946975c57b9a945050cd 100644
--- a/Source/core/animation/Interpolation.h
+++ b/Source/core/animation/Interpolation.h
@@ -7,6 +7,7 @@
 
 #include "CSSPropertyNames.h"
 #include "core/animation/InterpolableValue.h"
+#include "platform/Length.h"
 #include "platform/heap/Handle.h"
 #include "wtf/RefCounted.h"
 
@@ -99,9 +100,9 @@ private:
 
 class LengthStyleInterpolation : public StyleInterpolation {
 public:
-    static PassRefPtrWillBeRawPtr<LengthStyleInterpolation> create(CSSValue* start, CSSValue* end, CSSPropertyID id)
+    static PassRefPtrWillBeRawPtr<LengthStyleInterpolation> create(CSSValue* start, CSSValue* end, CSSPropertyID id, ValueRange range)
     {
-        return adoptRefWillBeNoop(new LengthStyleInterpolation(lengthToInterpolableValue(start), lengthToInterpolableValue(end), id));
+        return adoptRefWillBeNoop(new LengthStyleInterpolation(lengthToInterpolableValue(start), lengthToInterpolableValue(end), id, range));
     }
 
     static bool canCreateFrom(const CSSValue&);
@@ -111,12 +112,15 @@ public:
     virtual void trace(Visitor*) OVERRIDE;
 
 private:
-    LengthStyleInterpolation(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end, CSSPropertyID id)
+    LengthStyleInterpolation(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end, CSSPropertyID id, ValueRange range)
         : StyleInterpolation(start, end, id)
+        , m_range(range)
     { }
 
     static PassOwnPtrWillBeRawPtr<InterpolableValue> lengthToInterpolableValue(CSSValue*);
-    static PassRefPtrWillBeRawPtr<CSSValue> interpolableValueToLength(InterpolableValue*);
+    static PassRefPtrWillBeRawPtr<CSSValue> interpolableValueToLength(InterpolableValue*, ValueRange);
+
+    ValueRange m_range;
 
     friend class AnimationInterpolationTest;
 };