Remove config.h inclusion from third_party/WebKit/Source/core/.

third_party/WebKit/Source/core/frame/LayoutSubtreeRootList.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "config.h"
 #include "core/frame/LayoutSubtreeRootList.h"
 
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutView.h"
 #include <algorithm>
 
 namespace blink {
 
 unsigned LayoutSubtreeRootList::LayoutSubtree::determineDepth(LayoutObject* object)
 {
@@ skipping 58 matching lines @@
 }
 
 void LayoutSubtreeRootList::countObjectsNeedingLayout(unsigned& needsLayoutObjects, unsigned& totalObjects)
 {
     // TODO(leviw): This will double-count nested roots crbug.com/509141
     for (auto& root : m_roots)
         countObjectsNeedingLayoutInRoot(root, needsLayoutObjects, totalObjects);
 }
 
 } // namespace blink