Use Length for the stroke-dashoffset property in SVGLayoutStyle

Source/core/animation/StringKeyframe.cpp

Index: Source/core/animation/StringKeyframe.cpp
diff --git a/Source/core/animation/StringKeyframe.cpp b/Source/core/animation/StringKeyframe.cpp
index e221446e49a781e8b2488999c9dd5aaf2926d325..772e5f9a84c6e558555196b838468caa2b99bc4f 100644
--- a/Source/core/animation/StringKeyframe.cpp
+++ b/Source/core/animation/StringKeyframe.cpp
@@ -188,6 +188,7 @@ PassRefPtrWillBeRawPtr<Interpolation> StringKeyframe::PropertySpecificKeyframe::
     case CSSPropertyMarginTop:
     case CSSPropertyOutlineOffset:
     case CSSPropertyRight:
+    case CSSPropertyStrokeDashoffset:
     case CSSPropertyTop:
     case CSSPropertyVerticalAlign:
     case CSSPropertyWordSpacing:
@@ -332,11 +333,8 @@ PassRefPtrWillBeRawPtr<Interpolation> StringKeyframe::PropertySpecificKeyframe::
         break;
     }
 
-    case CSSPropertyStrokeWidth:
-        range = RangeNonNegative;
-        // Fall through
-    case CSSPropertyStrokeDashoffset: {
-        RefPtrWillBeRawPtr<Interpolation> interpolation = SVGLengthStyleInterpolation::maybeCreate(*fromCSSValue, *toCSSValue, property, range);
+    case CSSPropertyStrokeWidth: {
+        RefPtrWillBeRawPtr<Interpolation> interpolation = SVGLengthStyleInterpolation::maybeCreate(*fromCSSValue, *toCSSValue, property, RangeNonNegative);
         if (interpolation)
             return interpolation.release();