Do-not-commit: Count layout tree memory usage

third_party/WebKit/Source/core/layout/LayoutMenuList.h

Index: third_party/WebKit/Source/core/layout/LayoutMenuList.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutMenuList.h b/third_party/WebKit/Source/core/layout/LayoutMenuList.h
index 1601bcb76f340af95a47bda7da42ecb9556b1ca5..35a914b3af29a71079f34be3c742707d8cda42a6 100644
--- a/third_party/WebKit/Source/core/layout/LayoutMenuList.h
+++ b/third_party/WebKit/Source/core/layout/LayoutMenuList.h
@@ -44,6 +44,13 @@ class CORE_EXPORT LayoutMenuList final : public LayoutFlexibleBox {
   String text() const;
 
   const char* name() const override { return "LayoutMenuList"; }
+  char objectSize() const override { return sizeof(this); }
+  char approximateHeapMemoryUsage() const override {
+    int memory = LayoutFlexibleBox::approximateHeapMemoryUsage();
+    if (m_optionStyle)
+      memory += sizeof(ComputedStyle);
+    return memory;
+  }
 
   LayoutUnit clientPaddingLeft() const;
   LayoutUnit clientPaddingRight() const;