[Qt] Add API in QWebSettings for setting the CSS media type
https://bugs.webkit.org/show_bug.cgi?id=113853

Patch by Jose Lejin PJ <jose.lejin@gmail.com> on 2013-04-10
Reviewed by Jocelyn Turcotte.

* Api/qwebsettings.cpp:
(QWebSettingsPrivate):
(QWebSettingsPrivate::apply):
(QWebSettings::setCSSMediaType):
(QWebSettings::cssMediaType):
* Api/qwebsettings.h:
* WebCoreSupport/FrameLoaderClientQt.cpp:
(WebCore::FrameLoaderClientQt::overrideMediaType):
* tests/qwebpage/tst_qwebpage.cpp:
(tst_QWebPage):
(tst_QWebPage::cssMediaTypeGlobalSetting):
(tst_QWebPage::cssMediaTypePageSetting):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148095 268f45cc-cd09-0410-ab3c-d52691b4dbfc