Reviewed by Mitz.

        - tweak CSSReflectValue, possibly fixing the leaks seen on the buildbot

        * WebCore.vcproj/WebCore.vcproj: Added CSSReflectionDirection.h. 
        * WebCore.xcodeproj/project.pbxproj: Ditto.
        * css/CSSReflectionDirection.h: Added.

        * css/CSSComputedStyleDeclaration.cpp:
        (WebCore::valueForReflection): Changed to use CSSReflectValue::create.
        * css/CSSParser.cpp:
        (WebCore::CSSParser::parseReflect): Ditto.

        * css/CSSReflectValue.h: Added a create function. Got rid of the setter
        functions, which had const PassRefPtr& arguments -- those probably caused
        the leaks although I'm not exactly sure why. Made the contructor and all
        the data members private.

        * rendering/style/RenderStyle.h: Changed to include CSSReflectionDirection.h
        instead of CSSReflectValue.h so we can tweak CSSReflectValue without
        recompiling the world.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@33572 268f45cc-cd09-0410-ab3c-d52691b4dbfc