Remove ~1750 superfluous includes from core

Source/core/page/FocusController.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * 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 16 matching lines @@
 #include "config.h"
 #include "core/page/FocusController.h"
 
 #include <limits>
 #include "HTMLNames.h"
 #include "core/accessibility/AXObjectCache.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/Event.h"
 #include "core/dom/EventNames.h"
-#include "core/dom/ExceptionCode.h"
-#include "core/dom/KeyboardEvent.h"
 #include "core/dom/NodeRenderingTraversal.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/Range.h"
 #include "core/dom/shadow/ElementShadow.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/editing/Editor.h"
 #include "core/editing/FrameSelection.h"
 #include "core/editing/htmlediting.h" // For firstPositionInOrBeforeNode
 #include "core/html/HTMLAreaElement.h"
 #include "core/html/HTMLImageElement.h"
 #include "core/page/Chrome.h"
 #include "core/page/EditorClient.h"
 #include "core/page/EventHandler.h"
 #include "core/page/Frame.h"
 #include "core/page/FrameTree.h"
 #include "core/page/FrameView.h"
 #include "core/page/Page.h"
 #include "core/page/Settings.h"
 #include "core/page/SpatialNavigation.h"
-#include "core/platform/ScrollAnimator.h"
-#include "core/platform/Widget.h"
 #include "core/rendering/HitTestResult.h"
-#include "core/rendering/RenderObject.h"
-#include "core/rendering/RenderWidget.h"
 
 namespace WebCore {
 
 using namespace HTMLNames;
 using namespace std;
 
 FocusNavigationScope::FocusNavigationScope(TreeScope* treeScope)
     : m_rootTreeScope(treeScope)
 {
     ASSERT(treeScope);
@@ skipping 790 matching lines @@
         startingRect = nodeRectInAbsoluteCoordinates(container, true /* ignore border */);
         container = scrollableEnclosingBoxOrParentFrameForNodeInDirection(direction, container);
         if (container && container->isDocumentNode())
             toDocument(container)->updateLayoutIgnorePendingStylesheets();
     } while (!consumed && container);
 
     return consumed;
 }
 
 } // namespace WebCore