Remove ~1750 superfluous includes from core

Source/core/rendering/RenderLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 28 matching lines @@
  * other provisions required by the MPL or the GPL, as the case may be.
  * If you do not delete the provisions above, a recipient may use your
  * version of this file under any of the LGPL, the MPL or the GPL.
  */
 
 #include "config.h"
 #include "core/rendering/RenderLayer.h"
 
 #include "CSSPropertyNames.h"
 #include "HTMLNames.h"
-#include "core/css/StylePropertySet.h"
 #include "core/css/resolver/StyleResolver.h"
 #include "core/dom/Document.h"
 #include "core/dom/DocumentEventQueue.h"
-#include "core/dom/OverflowEvent.h"
 #include "core/dom/WebCoreMemoryInstrumentation.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/editing/FrameSelection.h"
 #include "core/html/HTMLFrameElement.h"
 #include "core/html/HTMLFrameOwnerElement.h"
-#include "core/loader/FrameLoader.h"
-#include "core/loader/FrameLoaderClient.h"
-#include "core/page/Chrome.h"
 #include "core/page/EventHandler.h"
 #include "core/page/FocusController.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/UseCounter.h"
 #include "core/page/animation/AnimationController.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
-#include "core/platform/FloatConversion.h"
 #include "core/platform/HistogramSupport.h"
 #include "core/platform/PlatformGestureEvent.h"
 #include "core/platform/PlatformMouseEvent.h"
 #include "core/platform/ScrollAnimator.h"
 #include "core/platform/Scrollbar.h"
 #include "core/platform/ScrollbarTheme.h"
 #include "core/platform/graphics/FloatPoint3D.h"
 #include "core/platform/graphics/FloatRect.h"
-#include "core/platform/graphics/Gradient.h"
 #include "core/platform/graphics/GraphicsContextStateSaver.h"
 #include "core/platform/graphics/filters/custom/CustomFilterGlobalContext.h"
 #include "core/platform/graphics/filters/custom/CustomFilterOperation.h"
 #include "core/platform/graphics/filters/custom/CustomFilterValidatedProgram.h"
 #include "core/platform/graphics/filters/custom/ValidatedCustomFilterOperation.h"
-#include "core/platform/graphics/filters/FEColorMatrix.h"
-#include "core/platform/graphics/filters/FEMerge.h"
-#include "core/platform/graphics/filters/SourceGraphic.h"
 #include "core/platform/graphics/transforms/ScaleTransformOperation.h"
 #include "core/platform/graphics/transforms/TransformationMatrix.h"
 #include "core/platform/graphics/transforms/TranslateTransformOperation.h"
-#include "core/platform/text/TextStream.h"
 #include "core/rendering/ColumnInfo.h"
 #include "core/rendering/FilterEffectRenderer.h"
 #include "core/rendering/HitTestRequest.h"
 #include "core/rendering/HitTestResult.h"
 #include "core/rendering/HitTestingTransformState.h"
 #include "core/rendering/OverlapTestRequestClient.h"
 #include "core/rendering/RenderArena.h"
 #include "core/rendering/RenderFlowThread.h"
 #include "core/rendering/RenderGeometryMap.h"
 #include "core/rendering/RenderInline.h"
 #include "core/rendering/RenderLayerBacking.h"
 #include "core/rendering/RenderLayerCompositor.h"
-#include "core/rendering/RenderLazyBlock.h"
 #include "core/rendering/RenderMarquee.h"
 #include "core/rendering/RenderReplica.h"
 #include "core/rendering/RenderScrollbar.h"
 #include "core/rendering/RenderScrollbarPart.h"
-#include "core/rendering/RenderTheme.h"
-#include "core/rendering/RenderTreeAsText.h"
 #include "core/rendering/RenderView.h"
 #include "core/rendering/svg/RenderSVGResourceClipper.h"
 #include <wtf/MemoryInstrumentationVector.h>
 #include <wtf/StdLibExtras.h>
 #include <wtf/text/CString.h>
 #include <wtf/UnusedParam.h>
 
 #if ENABLE(SVG)
 #include "SVGNames.h"
 #endif
@@ skipping 6345 matching lines @@
     }
 }
 
 void showLayerTree(const WebCore::RenderObject* renderer)
 {
     if (!renderer)
         return;
     showLayerTree(renderer->enclosingLayer());
 }
 #endif