Fix resource scheduling on documents with <frameset>.

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 16 matching lines @@
 #include "CSSPropertyNames.h"
 #include "HTMLNames.h"
 #include "bindings/v8/ScriptEventListener.h"
 #include "core/dom/Document.h"
 #include "core/dom/Event.h"
 #include "core/dom/EventNames.h"
 #include "core/dom/MouseEvent.h"
 #include "core/dom/NodeRenderingContext.h"
 #include "core/html/HTMLCollection.h"
 #include "core/html/HTMLFrameElement.h"
+#include "core/loader/FrameLoaderClient.h"
+#include "core/page/Frame.h"
 #include "core/platform/Length.h"
 #include "core/rendering/RenderFrameSet.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 
 HTMLFrameSetElement::HTMLFrameSetElement(const QualifiedName& tagName, Document* document)
     : HTMLElement(tagName, document)
     , m_totalRows(1)
     , m_totalCols(1)
     , m_border(6)
     , m_borderSet(false)
     , m_borderColorSet(false)
     , m_frameborder(true)
     , m_frameborderSet(false)
     , m_noresize(false)
 {
     ASSERT(hasTagName(framesetTag));
     ScriptWrappable::init(this);
     setHasCustomStyleCallbacks();
+    document->frame()->loader()->client()->dispatchWillInsertBody();

[abarth-chromium, 2013/06/03 22:46:48]

Should we wait for the HTMLFrameSetElement to be inserted into the DOM?  At what
point do we call this function for HTMLBodyElement?

Also, this line of code will crash for HTMLFrameSetElements that are in
Documents that don't have frames.

 }
 
 PassRefPtr<HTMLFrameSetElement> HTMLFrameSetElement::create(const QualifiedName& tagName, Document* document)
 {
     return adoptRef(new HTMLFrameSetElement(tagName, document));
 }
 
 bool HTMLFrameSetElement::isPresentationAttribute(const QualifiedName& name) const
 {
     if (name == bordercolorAttr)
@@ skipping 142 matching lines @@
     Node* frameNode = children()->namedItem(name);
     if (!frameNode || !frameNode->hasTagName(HTMLNames::frameTag))
         return 0;
     Document* document = static_cast<HTMLFrameElement*>(frameNode)->contentDocument();
     if (!document || !document->frame())
         return 0;
     return document->domWindow();
 }
 
 } // namespace WebCore