More refactoring of image to disentangle graphics (e.g., Cairo) from

    More refactoring of image to disentangle graphics (e.g., Cairo) from
        platform (e.g., Windows).

        * WebCore.vcproj/WebCore/WebCore.vcproj:
        Add ImageWin to project.

        * loader/Cache.cpp:
        (WebCore::Cache::init):
        * loader/icon/IconDataCache.cpp:
        (WebCore::IconDataCache::loadImageFromResource):
        Renamed loadResource to loadPlatformResource to try to make it more clear
        that this call is implemented on each OS (and not by graphics libraries).

        * platform/Image.cpp:
        (WebCore::Image::Image):
        (WebCore::Image::~Image):
        (WebCore::Image::invalidateData):
        (WebCore::Image::size):
        (WebCore::Image::setData):
        (WebCore::Image::setNativeData):
        Fix up the PDF code to not be considered platform data any more, since
        PDF rendering is not for a specific OS.

        Renamed the methods that set OS-specific data (like NSImage) to PlatformData
        instead of NativeData.

        * platform/Image.h:
        Shifted the PDF members into CG defines.  Made CGImageRef a CG define.
        Renamed methods to reflect that they are OS-specific and not
        graphics-library-specific.

        * platform/cairo/ImageCairo.cpp:
        Removed the platform data methods.  Other platforms besides Windows that
        use Cairo will need to account for this change by adding these methods
        to their OS Image***.cpp file.

        * platform/cg/ImageCG.cpp:
        (WebCore::Image::drawTiled):
        Add FIXMEs to the wkpattern stuff.

        * platform/cg/PDFDocumentImage.cpp:
        Shouldn't have #imports in .cpp.

        * platform/mac/ImageMac.mm:
        (WebCore::Image::initPlatformData):
        (WebCore::Image::invalidatePlatformData):
        (WebCore::Image::loadPlatformResource):
        (WebCore::Image::getTIFFRepresentation):
        Add the platform data initializers to the Mac Image file.   Move the
        TIFF representation there as well, since this is only used by Mac code.

        * platform/win/ImageWin.cpp: Added.
        (WebCore::Image::initPlatformData):
        (WebCore::Image::invalidatePlatformData):
        (WebCore::Image::loadPlatformResource):
        (WebCore::Image::supportsType):
        Similar work for Windows.  Add stubs for possible future HBITMAP returns
        in the platform data methods.

        * rendering/RenderLayer.cpp:
        (WebCore::RenderLayer::paintResizeControl):
        * rendering/RenderThemeMac.mm:
        (WebCore::RenderThemeMac::paintResizeControl):
        loadResource -> loadPlatformResource

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@16048 268f45cc-cd09-0410-ab3c-d52691b4dbfc