Add StylePath and use it to store 'd' in ComputedStyle

third_party/WebKit/Source/core/animation/SVGPathInterpolationType.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/SVGPathInterpolationType.h"
 
 #include "core/animation/InterpolatedSVGPathSource.h"
 #include "core/animation/InterpolationEnvironment.h"
 #include "core/animation/SVGPathSegInterpolationFunctions.h"
 #include "core/svg/SVGPath.h"
@@ skipping 139 matching lines @@
 
     ASSERT(pathSegTypesMatch(
         toSVGPathNonInterpolableValue(underlyingValue->nonInterpolableValue())->pathSegTypes(),
         toSVGPathNonInterpolableValue(value.nonInterpolableValue())->pathSegTypes()));
     underlyingValue.mutableComponent().interpolableValue->scaleAndAdd(neutralComponent, value.interpolableValue());
     underlyingValue.mutableComponent().nonInterpolableValue = const_cast<NonInterpolableValue*>(value.nonInterpolableValue()); // Take ref.
 }
 
 PassRefPtrWillBeRawPtr<SVGPropertyBase> SVGPathInterpolationType::appliedSVGValue(const InterpolableValue& interpolableValue, const NonInterpolableValue* nonInterpolableValue) const
 {
-    OwnPtr<SVGPathByteStream> pathByteStream = SVGPathByteStream::create();
+    RefPtr<SVGPathByteStream> pathByteStream = SVGPathByteStream::create();
     InterpolatedSVGPathSource source(
         toInterpolableList(*toInterpolableList(interpolableValue).get(PathArgsIndex)),
         toSVGPathNonInterpolableValue(nonInterpolableValue)->pathSegTypes());
     SVGPathByteStreamBuilder builder(*pathByteStream);
     SVGPathParser(&source, &builder).parsePathDataFromSource(UnalteredParsing, false);
     return SVGPath::create(CSSPathValue::create(pathByteStream.release()));
 }
 
 } // namespace blink