Reviewed by John Sullivan.

        - fix <rdar://problem/5607547> Single letter surrounded by soft hyphens can disappear

        Test: fast/text/soft-hyphen-2.html

        * rendering/bidi.cpp:
        (WebCore::chopMidpointsAt): Changed to iterate midpoints backwards, so
        that if there are two midpoints at the given position, only the last one
        will be chopped off.

LayoutTests:

        Reviewed by John Sullivan.

        - test for <rdar://problem/5607547> Single letter surrounded by soft hyphens can disappear

        * fast/text/soft-hyphen-2.html: Added.
        * platform/mac/fast/text/soft-hyphen-2-expected.checksum: Added.
        * platform/mac/fast/text/soft-hyphen-2-expected.png: Added.
        * platform/mac/fast/text/soft-hyphen-2-expected.txt: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@30644 268f45cc-cd09-0410-ab3c-d52691b4dbfc