Do-not-commit: Count layout tree memory usage

third_party/WebKit/Source/core/layout/svg/LayoutSVGShape.h

Index: third_party/WebKit/Source/core/layout/svg/LayoutSVGShape.h
diff --git a/third_party/WebKit/Source/core/layout/svg/LayoutSVGShape.h b/third_party/WebKit/Source/core/layout/svg/LayoutSVGShape.h
index 6942444dab4b766c5cf786c5477deb890a865c7b..3d7ece8a5bf8472e63834b5a00c306844a86374e 100644
--- a/third_party/WebKit/Source/core/layout/svg/LayoutSVGShape.h
+++ b/third_party/WebKit/Source/core/layout/svg/LayoutSVGShape.h
@@ -125,6 +125,15 @@ class LayoutSVGShape : public LayoutSVGModelObject {
   FloatRect m_strokeBoundingBox;
   LayoutSVGShapeRareData& ensureRareData() const;
 
+  char objectSize() const override { return sizeof(this); }
+  char approximateHeapMemoryUsage() const override {
+    int memory = LayoutSVGModelObject::approximateHeapMemoryUsage();
+    // TODO(pdr): Include memory from m_path.
+    if (m_rareData)
+      memory += sizeof(LayoutSVGShapeRareData);
+    return memory;
+  }
+
  private:
   // Hit-detection separated for the fill and the stroke
   bool fillContains(const FloatPoint&,