SInce around r85830. http://build.chromium.org/p/chromium.webkit/builders/Webkit%20Win7/builds/3091 http://codesearch.google.com/codesearch/p?hl=en#OAMlx_jo-ck/src/third_party/WebKit/Source/WebKit/chromium/tests/CCThreadTest.cpp I couldn't figure out which revision is wrong. r85814 might be susceptive. But I'm not sure.
Temporally disabled at http://trac.webkit.org/changeset/85833 at this time.