Remove some unused includes from core/css and core/dom

Source/core/dom/TreeScope.cpp

 /*
  * Copyright (C) 2011 Google Inc. All Rights Reserved.
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 17 matching lines @@
 #include "core/dom/TreeScope.h"
 
 #include "HTMLNames.h"
 #include "core/dom/ContainerNode.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/EventPathWalker.h"
 #include "core/dom/IdTargetObserverRegistry.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/TreeScopeAdopter.h"
-#include "core/dom/shadow/InsertionPoint.h"
-#include "core/dom/shadow/ShadowRoot.h"
 #include "core/html/HTMLAnchorElement.h"
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/html/HTMLLabelElement.h"
 #include "core/html/HTMLMapElement.h"
 #include "core/page/DOMSelection.h"
-#include "core/page/DOMWindow.h"
 #include "core/page/FocusController.h"
 #include "core/page/Frame.h"
 #include "core/page/FrameView.h"
 #include "core/page/Page.h"
-#include "RuntimeEnabledFeatures.h"
 #include "core/rendering/HitTestResult.h"
 #include "core/rendering/RenderView.h"
 #include <wtf/text/AtomicString.h>
 #include <wtf/text/CString.h>
 #include <wtf/Vector.h>
 
 namespace WebCore {
 
 struct SameSizeAsTreeScope {
     virtual ~SameSizeAsTreeScope();
@@ skipping 384 matching lines @@
 {
     ASSERT(scope);
     for (; scope; scope = scope->parentTreeScope()) {
         if (scope == this)
             return true;
     }
     return false;
 }
 
 } // namespace WebCore