[SVGDom/experimental] Initial SVGLength support

experimental/svg/model/SkSVGShape.cpp

+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkSVGRenderContext.h"
+#include "SkSVGShape.h"
+
+SkSVGShape::SkSVGShape(SkSVGTag t) : INHERITED(t) {}
+
+void SkSVGShape::onRender(SkCanvas* canvas, const SkSVGRenderContext& ctx) const {
+    if (const SkPaint* fillPaint = ctx.fillPaint()) {
+        this->onDraw(canvas, ctx.lengthContext(), *fillPaint);
+    }
+
+    if (const SkPaint* strokePaint = ctx.strokePaint()) {
+        this->onDraw(canvas, ctx.lengthContext(), *strokePaint);
+    }
+}
+
+void SkSVGShape::appendChild(sk_sp<SkSVGNode>) {
+    SkDebugf("cannot append child nodes to an SVG shape.\n");
+}