NEW 146131
Migrate break_lines.h to unsigned optionals 
https://bugs.webkit.org/show_bug.cgi?id=146131
Summary Migrate break_lines.h to unsigned optionals
Myles C. Maxfield
Reported 2015-06-18 16:58:12 PDT
Currently, we use ints with a -1 sentinel value. Instead, we should implement a special unsigned optional type which still uses -1 as its sentinel (because using a regular optional would cause a performance regression)
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Myles C. Maxfield
Comment 1 2015-08-24 11:55:02 PDT
Look at m_nextBreakablePosition in InlineIterator
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