Reviewed by David Levin.

        Fix characters with unicode-bidi-mirror property are not correctly
        mirrored in Linux.
        https://bugs.webkit.org/show_bug.cgi?id=41305

        Since harfbuzz does not do mirroring, chromium should iterate each
        character in the string and mirror it if needed before passing the
        string to harfbuzz for shaping.

        Test: fast/text/international/bidi-mirror-he-ar.html

        * platform/graphics/chromium/FontLinux.cpp:
        (WebCore::TextRunWalker::TextRunWalker):
        (WebCore::TextRunWalker::~TextRunWalker):
        (WebCore::TextRunWalker::mirrorCharacters):

2010-07-09  Xiaomei Ji  <xji@chromium.org>

        Reviewed by David Levin.

        Fix characters with unicode-bidi-mirror property are not correctly
        mirrored in Linux.
        https://bugs.webkit.org/show_bug.cgi?id=41305

        Since harfbuzz does not do mirroring, chromium should iterate each
        character in the string and mirror it if needed before passing the
        string to harfbuzz for shaping.

        * fast/text/international/bidi-mirror-he-ar.html: Added.
        * platform/chromium-linux/fast/text/international/bidi-neutral-run-expected.checksum:
        * platform/chromium-linux/fast/text/international/bidi-neutral-run-expected.png:
        * platform/mac-snowleopard/platform/mac/fast/text: Added.
        * platform/mac-snowleopard/platform/mac/fast/text/international: Added.
        * platform/mac-snowleopard/platform/mac/fast/text/international/bidi-mirror-he-ar-expected.txt: Added.
        * platform/mac-tiger/fast/text/international/bidi-mirror-he-ar-expected.txt: Added.
        * platform/mac/fast/text/international/bidi-mirror-he-ar-expected.checksum: Added.
        * platform/mac/fast/text/international/bidi-mirror-he-ar-expected.png: Added.
        * platform/mac/fast/text/international/bidi-mirror-he-ar-expected.txt: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@62965 268f45cc-cd09-0410-ab3c-d52691b4dbfc