/usr/include/qt4/QtWebKit/ is in libqtwebkit-dev 2.2.1-1ubuntu4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/qt4/QtWebKit/QGraphicsWebView
/usr/include/qt4/QtWebKit/QWebDatabase
/usr/include/qt4/QtWebKit/QWebElement
/usr/include/qt4/QtWebKit/QWebElementCollection
/usr/include/qt4/QtWebKit/QWebFrame
/usr/include/qt4/QtWebKit/QWebHistory
/usr/include/qt4/QtWebKit/QWebHistoryInterface
/usr/include/qt4/QtWebKit/QWebHistoryItem
/usr/include/qt4/QtWebKit/QWebHitTestResult
/usr/include/qt4/QtWebKit/QWebInspector
/usr/include/qt4/QtWebKit/QWebPage
/usr/include/qt4/QtWebKit/QWebPluginFactory
/usr/include/qt4/QtWebKit/QWebSecurityOrigin
/usr/include/qt4/QtWebKit/QWebSettings
/usr/include/qt4/QtWebKit/QWebView
/usr/include/qt4/QtWebKit/QtWebKit
/usr/include/qt4/QtWebKit/ViewportAttributes
/usr/include/qt4/QtWebKit/qgraphicswebview.h
/usr/include/qt4/QtWebKit/qwebdatabase.h
/usr/include/qt4/QtWebKit/qwebelement.h
/usr/include/qt4/QtWebKit/qwebframe.h
/usr/include/qt4/QtWebKit/qwebhistory.h
/usr/include/qt4/QtWebKit/qwebhistoryinterface.h
/usr/include/qt4/QtWebKit/qwebinspector.h
/usr/include/qt4/QtWebKit/qwebkitglobal.h
/usr/include/qt4/QtWebKit/qwebkitplatformplugin.h
/usr/include/qt4/QtWebKit/qwebkitversion.h
/usr/include/qt4/QtWebKit/qwebpage.h
/usr/include/qt4/QtWebKit/qwebpluginfactory.h
/usr/include/qt4/QtWebKit/qwebsecurityorigin.h
/usr/include/qt4/QtWebKit/qwebsettings.h
/usr/include/qt4/QtWebKit/qwebview.h