Reviewed by Eric Seidel.

        https://bugs.webkit.org/show_bug.cgi?id=26353
        Corrects handling of Cairo fonts that were getting out of
        sync due to default copy construction.  Also refactors
        some incorrect platform font destruction code that belongs
        in the font object's destructor.

        * platform/graphics/win/FontPlatformData.h:
        * platform/graphics/win/FontPlatformDataCGWin.cpp:
        (WebCore::FontPlatformData::~FontPlatformData):
        * platform/graphics/win/FontPlatformDataCairoWin.cpp:
        (WebCore::FontPlatformData::platformDataInit):
        (WebCore::FontPlatformData::FontPlatformData):
        (WebCore::FontPlatformData::setFont):
        (WebCore::FontPlatformData::~FontPlatformData):
        * platform/graphics/win/FontPlatformDataWin.cpp:
        * platform/graphics/win/SimpleFontDataCGWin.cpp:
        * platform/graphics/win/SimpleFontDataCairoWin.cpp:
        (WebCore::SimpleFontData::platformInit):
        (WebCore::SimpleFontData::platformWidthForGlyph):
        * platform/graphics/win/SimpleFontDataWin.cpp:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@44628 268f45cc-cd09-0410-ab3c-d52691b4dbfc