Do-not-commit: Count layout tree memory usage

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

Index: third_party/WebKit/Source/core/layout/LayoutRuby.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutRuby.h b/third_party/WebKit/Source/core/layout/LayoutRuby.h
index 1197302f475e6046ffa938753473b4cfa0bd7214..ed5e25f3824037e9253e73058a793813c34fa675 100644
--- a/third_party/WebKit/Source/core/layout/LayoutRuby.h
+++ b/third_party/WebKit/Source/core/layout/LayoutRuby.h
@@ -73,6 +73,7 @@ class LayoutRubyAsInline final : public LayoutInline {
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectRuby || LayoutInline::isOfType(type);
   }
+  char objectSize() const override { return sizeof(this); }
   bool createsAnonymousWrapper() const override { return true; }
 };
 
@@ -87,6 +88,7 @@ class LayoutRubyAsBlock final : public LayoutBlockFlow {
   void removeChild(LayoutObject* child) override;
 
   const char* name() const override { return "LayoutRuby (block)"; }
+  char objectSize() const override { return sizeof(this); }
 
  protected:
   void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;