Unreviewed buildfix after r147260.

* WebProcess/qt/QtBuiltinBundlePage.cpp:
(WebKit::QtBuiltinBundlePage::QtBuiltinBundlePage):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147277 268f45cc-cd09-0410-ab3c-d52691b4dbfc