Move rendering/RenderObject to layout/LayoutObject.

Source/core/html/HTMLButtonElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 28 matching lines @@
 
     virtual bool willRespondToMouseClickEvents() override;
 
 private:
     HTMLButtonElement(Document&, HTMLFormElement*);
 
     enum Type { SUBMIT, RESET, BUTTON };
 
     virtual const AtomicString& formControlType() const override;
 
-    virtual RenderObject* createRenderer(RenderStyle*) override;
+    virtual LayoutObject* createRenderer(RenderStyle*) override;
 
     // HTMLFormControlElement always creates one, but buttons don't need it.
     virtual bool alwaysCreateUserAgentShadowRoot() const override { return false; }
 
     virtual Node::InsertionNotificationRequest insertedInto(ContainerNode*) override;
     virtual void attributeWillChange(const QualifiedName&, const AtomicString& oldValue, const AtomicString& newValue) override;
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
     virtual bool isPresentationAttribute(const QualifiedName&) const override;
     virtual void defaultEventHandler(Event*) override;
 
@@ skipping 16 matching lines @@
     virtual bool isOptionalFormControl() const override { return true; }
     virtual bool recalcWillValidate() const override;
 
     Type m_type;
     bool m_isActivatedSubmit;
 };
 
 } // namespace blink
 
 #endif // HTMLButtonElement_h