Call Element::rebuildLayoutTree from Document::updateStyle directly

third_party/WebKit/Source/core/html/HTMLFrameSetElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann (hausmann@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2009, 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
@@ skipping 256 matching lines @@
     document().willInsertBody();
   }
   return HTMLElement::insertedInto(insertionPoint);
 }
 
 void HTMLFrameSetElement::willRecalcStyle(StyleRecalcChange) {
   if (needsStyleRecalc() && layoutObject()) {
     layoutObject()->setNeedsLayoutAndFullPaintInvalidation(
         LayoutInvalidationReason::StyleChange);
     clearNeedsStyleRecalc();
-    clearNeedsReattachLayoutTree();
   }
 }
 
 LocalDOMWindow* HTMLFrameSetElement::anonymousNamedGetter(
     const AtomicString& name) {
   Element* frameElement = children()->namedItem(name);
   if (!isHTMLFrameElement(frameElement))
     return nullptr;
   Document* document = toHTMLFrameElement(frameElement)->contentDocument();
   if (!document || !document->frame())
     return nullptr;
   return document->domWindow();
 }
 
 }  // namespace blink