After landing build fix in http://trac.webkit.org/changeset/149429 it turned out other modifications are needed for Win build, because there are some Win specific code that refers to the deleted CoreIPC/BinarySemaphore. Patch will be attached shortly.
Created attachment 200214 [details]
Comment on attachment 200214 [details]
Clearing flags on attachment: 200214
Committed r149433: <http://trac.webkit.org/changeset/149433>
All reviewed patches have been landed. Closing bug.