SegmentedString should keep track of how many characters it consumes
Created attachment 63967 [details] Patch
This facility will be used to implement view-source in Bug 43746.
Comment on attachment 63967 [details] Patch This looks sane. I assume you perf tested this?
The pref testing shows a minor increase, either due to noise or improve use of cache lines.
Comment on attachment 63967 [details] Patch Clearing flags on attachment: 63967 Committed r65100: <http://trac.webkit.org/changeset/65100>
All reviewed patches have been landed. Closing bug.