Lazily create the Path in StylePath

third_party/WebKit/Source/core/style/StylePath.h

 // Copyright 2016 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.
 
 #ifndef StylePath_h
 #define StylePath_h
 
-#include "platform/graphics/Path.h"
 #include "platform/heap/Handle.h"
+#include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class CSSValue;
+class Path;
 class SVGPathByteStream;
 
 class StylePath : public RefCounted<StylePath> {
 public:
     static PassRefPtr<StylePath> create(PassRefPtr<SVGPathByteStream>);
     ~StylePath();
 
     static StylePath* emptyPath();
 
-    const Path& path() const { return m_path; }
+    const Path& path() const;
     const SVGPathByteStream& byteStream() const;
 
     PassRefPtrWillBeRawPtr<CSSValue> computedCSSValue() const;
 
     bool equals(const StylePath&) const;
 
 private:
     explicit StylePath(PassRefPtr<SVGPathByteStream>);
 
     RefPtr<SVGPathByteStream> m_byteStream;
-    Path m_path;
+    mutable OwnPtr<Path> m_path;
 };
 
 } // namespace blink
 
 #endif // StylePath_h