[SVGDom/experimental] Initial SVGLength support

experimental/svg/model/SkSVGPath.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkSVGPath_DEFINED
 #define SkSVGPath_DEFINED
 
 #include "SkPath.h"
-#include "SkSVGTransformableNode.h"
+#include "SkSVGShape.h"
 
-class SkSVGPath final : public SkSVGTransformableNode {
+class SkSVGPath final : public SkSVGShape {
 public:
     virtual ~SkSVGPath() = default;
     static sk_sp<SkSVGPath> Make() { return sk_sp<SkSVGPath>(new SkSVGPath()); }
 
-    void appendChild(sk_sp<SkSVGNode>) override { }
-
     void setPath(const SkPath& path) { fPath = path; }
 
 protected:
-    void onRender(SkCanvas*, const SkSVGRenderContext&) const override;
+    void onSetAttribute(SkSVGAttribute, const SkSVGValue&) override;
 
-    void onSetAttribute(SkSVGAttribute, const SkSVGValue&) override;
+    void onDraw(SkCanvas*, const SkSVGLengthContext&, const SkPaint&) const override;
 
 private:
     SkSVGPath();
 
-    void doRender(SkCanvas*, const SkPaint*) const;
-
     SkPath fPath;
 
-    typedef SkSVGTransformableNode INHERITED;
+    typedef SkSVGShape INHERITED;
 };
 
 #endif // SkSVGPath_DEFINED