[SVGDom] Add rx/ry support for <rect>

experimental/svg/model/SkSVGShape.cpp

Index: experimental/svg/model/SkSVGShape.cpp
diff --git a/experimental/svg/model/SkSVGShape.cpp b/experimental/svg/model/SkSVGShape.cpp
index ad4b5cedae8ffc44b621fc9901aacde27fdeb2b7..516d4a2925e0658f97616c012eb35e8b519a0f70 100644
--- a/experimental/svg/model/SkSVGShape.cpp
+++ b/experimental/svg/model/SkSVGShape.cpp
@@ -11,6 +11,7 @@
 SkSVGShape::SkSVGShape(SkSVGTag t) : INHERITED(t) {}
 
 void SkSVGShape::onRender(const SkSVGRenderContext& ctx) const {
+    // TODO: this approach forces duplicate geometry resolution in onDraw(); refactor to avoid.
     if (const SkPaint* fillPaint = ctx.presentationContext().fillPaint()) {
         this->onDraw(ctx.canvas(), ctx.lengthContext(), *fillPaint);
     }