Reviewed by Kenneth Rohde Christiansen.

        Additional MathML mroot & msqrt tests.
        https://bugs.webkit.org/show_bug.cgi?id=37044

        * mathml/presentation/roots.xhtml: Added.
        * platform/mac/mathml/presentation/roots-expected.checksum: Added.
        * platform/mac/mathml/presentation/roots-expected.png: Added.
        * platform/mac/mathml/presentation/roots-expected.txt: Added.
2010-04-27  François Sausset  <sausset@gmail.com>

        Reviewed by Kenneth Rohde Christiansen.

        Implementation of the MathML mroot & msqrt elements.
        https://bugs.webkit.org/show_bug.cgi?id=37044

        Test: mathml/presentation/roots.xhtml

        * WebCore.xcodeproj/project.pbxproj:
        * css/mathml.css:
        (mroot):
        (mroot > * + *):
        (mroot > * + mrow, mroot > * + mfenced):
        * mathml/MathMLInlineContainerElement.cpp:
        (WebCore::MathMLInlineContainerElement::createRenderer):
        * mathml/RenderMathMLRoot.cpp: Added.
        (WebCore::RenderMathMLRoot::RenderMathMLRoot):
        (WebCore::RenderMathMLRoot::addChild):
        (WebCore::RenderMathMLRoot::paint):
        (WebCore::RenderMathMLRoot::layout):
        * mathml/RenderMathMLRoot.h: Added.
        * mathml/RenderMathMLSquareRoot.cpp: Added.
        (WebCore::RenderMathMLSquareRoot::RenderMathMLSquareRoot):
        (WebCore::RenderMathMLSquareRoot::paint):
        (WebCore::RenderMathMLSquareRoot::layout):
        * mathml/RenderMathMLSquareRoot.h: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@58349 268f45cc-cd09-0410-ab3c-d52691b4dbfc