Reviewed by Alexey Proskuryakov.

        Forward declare some headers where possible
        https://bugs.webkit.org/show_bug.cgi?id=52133

        No new tests because no new functionality.

        * css/CSSValue.h:
        * dom/BeforeLoadEvent.h:
        * dom/Event.cpp:
        * dom/Event.h:
        * dom/StyledElement.cpp:
        * dom/StyledElement.h:
        * loader/DocumentLoader.h:
        * loader/FrameLoader.h:
        * page/Frame.h:
        * platform/graphics/GraphicsContext.cpp:
        * platform/graphics/GraphicsContext.h:
        * platform/graphics/filters/FEBlend.cpp:
        * platform/graphics/filters/FEColorMatrix.cpp:
        * platform/graphics/filters/FEComponentTransfer.cpp:
        * platform/graphics/filters/FEComposite.cpp:
        * platform/graphics/filters/FEConvolveMatrix.cpp:
        * platform/graphics/filters/FEDiffuseLighting.cpp:
        * platform/graphics/filters/FEDisplacementMap.cpp:
        * platform/graphics/filters/FEFlood.cpp:
        * platform/graphics/filters/FEGaussianBlur.cpp:
        * platform/graphics/filters/FEMerge.cpp:
        * platform/graphics/filters/FEMorphology.cpp:
        * platform/graphics/filters/FEOffset.cpp:
        * platform/graphics/filters/FESpecularLighting.cpp:
        * platform/graphics/filters/FETile.cpp:
        * platform/graphics/filters/FETurbulence.cpp:
        * platform/graphics/filters/FilterEffect.cpp:
        * platform/graphics/filters/FilterEffect.h:
        * platform/graphics/filters/SourceAlpha.cpp:
        * platform/graphics/filters/SourceGraphic.cpp:
        * svg/SVGElement.cpp:
        * svg/SVGElement.h:
        * svg/SVGFEBlendElement.cpp:
        * svg/SVGFEColorMatrixElement.cpp:
        * svg/SVGFEComponentTransferElement.cpp:
        * svg/SVGFECompositeElement.cpp:
        * svg/SVGFEConvolveMatrixElement.cpp:
        * svg/SVGFEConvolveMatrixElement.h:
        * svg/SVGFEDiffuseLightingElement.cpp:
        * svg/SVGFEDisplacementMapElement.cpp:
        * svg/SVGFEGaussianBlurElement.cpp:
        * svg/SVGFEImageElement.h:
        * svg/SVGFEMergeElement.cpp:
        * svg/SVGFEMorphologyElement.cpp:
        * svg/SVGFEOffsetElement.cpp:
        * svg/SVGFESpecularLightingElement.cpp:
        * svg/SVGFETileElement.cpp:
        * svg/SVGFETurbulenceElement.h:
        * svg/SVGFilterPrimitiveStandardAttributes.cpp:
        * svg/SVGFilterPrimitiveStandardAttributes.h:
        * svg/SVGTextContentElement.cpp:
        * svg/graphics/filters/SVGFEImage.cpp:
        * svg/graphics/filters/SVGFEImage.h:
2011-01-09  Tony Gentilcore  <tonyg@chromium.org>

        Reviewed by Alexey Proskuryakov.

        Forward declare some headers where possible
        https://bugs.webkit.org/show_bug.cgi?id=52133

        * WebView/WebFrame.mm:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@75377 268f45cc-cd09-0410-ab3c-d52691b4dbfc