Remove ~1750 superfluous includes from core

Source/core/rendering/RenderFrameSet.cpp

 /**
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #include "config.h"
 #include "core/rendering/RenderFrameSet.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/EventNames.h"
 #include "core/dom/MouseEvent.h"
-#include "core/dom/WebCoreMemoryInstrumentation.h"
 #include "core/html/HTMLFrameSetElement.h"
 #include "core/page/EventHandler.h"
 #include "core/page/Frame.h"
-#include "core/page/FrameView.h"
-#include "core/page/Settings.h"
 #include "core/platform/Cursor.h"
 #include "core/platform/graphics/GraphicsContext.h"
-#include "core/rendering/HitTestRequest.h"
-#include "core/rendering/HitTestResult.h"
 #include "core/rendering/PaintInfo.h"
 #include "core/rendering/RenderFrame.h"
-#include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderView.h"
 #include <wtf/MemoryInstrumentationVector.h>
 
 namespace WebCore {
 
 RenderFrameSet::RenderFrameSet(HTMLFrameSetElement* frameSet)
     : RenderBox(frameSet)
     , m_isResizing(false)
     , m_isChildResizing(false)
 {
@@ skipping 637 matching lines @@
 void RenderFrameSet::GridAxis::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
 {
     MemoryClassInfo info(memoryObjectInfo, this, PlatformMemoryTypes::Rendering);
     info.addMember(m_sizes, "sizes");
     info.addMember(m_deltas, "deltas");
     info.addMember(m_preventResize, "preventResize");
     info.addMember(m_allowBorder, "allowBorder");
 }
 
 } // namespace WebCore