check-webkit-style erroneously complains about having multiple statements for the patch on https://bugs.webkit.org/show_bug.cgi?id=76312 due to ; appearing inside single quotation marks.
Code is here: http://trac.webkit.org/browser/trunk/Tools/Scripts/webkitpy/style/checkers/cpp.py and not too hard for new comers to change/fix as eae@chromium.org just demonstrated.
Whoops, this is about python code. For that WebKit just uses an external package. http://pypi.python.org/pypi/pep8 So it can't be fixed inside of WebKit. It would be best to follow up there if you want it fixed. It is referenced here: Tools/Scripts/webkitpy/thirdparty/__init__.py