[sksg] Refactor stroke logic

Instead of a specialized node, hoist attributes to base class.

TBR=
Change-Id: I4fa5a24dfc899307a8603577738972ebd32f57f5
Reviewed-on: https://skia-review.googlesource.com/89903
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
diff --git a/experimental/sksg/SkSGPaintNode.cpp b/experimental/sksg/SkSGPaintNode.cpp
index cd0bc81..2b7a31f 100644
--- a/experimental/sksg/SkSGPaintNode.cpp
+++ b/experimental/sksg/SkSGPaintNode.cpp
@@ -20,7 +20,15 @@
 void PaintNode::onRevalidate(InvalidationController*, const SkMatrix&) {
     SkASSERT(this->isInvalidated());
 
-    fPaint = this->onMakePaint();
+    fPaint.reset();
+    fPaint.setAntiAlias(fAntiAlias);
+    fPaint.setStyle(fStyle);
+    fPaint.setStrokeWidth(fStrokeWidth);
+    fPaint.setStrokeMiter(fStrokeMiter);
+    fPaint.setStrokeJoin(fStrokeJoin);
+    fPaint.setStrokeCap(fStrokeCap);
+
+    this->onApplyToPaint(&fPaint);
 }
 
 } // namespace sksg