Reviewed by Nikolas Zimmermann.

        getBoundingClientRect does not work with SVG <text>
        https://bugs.webkit.org/show_bug.cgi?id=46775

        Dispatched the calls from Element::getBoundingClientRect to getBBox
        through SVGElement::boundingBox.
        Recognized SVGTextElement in addition to SVGStyledLocatableElement
        as a class that provides getBBox.
        Fixed the result of zooming: adjusted the getBoundingClientRect rectangle
        for absolute zoom, even for SVG elements.

        Additional cleanup task:
        Removed redundant overloads of SVGStyledTransformableElement
        methods: nearestViewportElement, farthestViewportElement, getBBox.
        These methods are already inherited from SVGStyledLocatableElement.

        Test: css3/zoom-coords.xhtml

        * WebCore.xcodeproj/project.pbxproj: Set role of SVGLocatable.h to private.
        * dom/Element.cpp:
        (Element::getBoundingClientRect): Used SVGElement::boundingBox.
        Adjusted coordinates for absolute zoom, for all kinds of elements.
        * svg/SVGElement.cpp:
        * svg/SVGElement.h:
        (SVGElement::boundingBox): Added.
        * svg/SVGStyledTransformableElement.cpp:
        * svg/SVGStyledTransformableElement.h:
        (SVGStyledTransformableElement::nearestViewportElement): Removed.
        (SVGStyledTransformableElement::farthestViewportElement): Removed.
        (SVGStyledTransformableElement::getBBox): Removed.
2010-10-22  Cosmin Truta  <ctruta@chromium.org>

        Reviewed by Nikolas Zimmermann.

        getBoundingClientRect does not work with SVG <text>
        https://bugs.webkit.org/show_bug.cgi?id=46775

        Added coordinate checks on various zoomed-in and zoomed-out
        XHTML and SVG elements, using getBoundingClientRect.

        * css3/zoom-coords.xhtml: Added.
        * css3/zoom-coords-expected.txt: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@70317 268f45cc-cd09-0410-ab3c-d52691b4dbfc