[Qt] Unreviewed build fix.

Add missing Qt specific initializer for willLoadURLRequest and willLoadDataRequest.

Patch by Zoltan Arvai  <zarvai@inf.u-szeged.hu>, Ádám Kallai <kadam@inf.u-szeged.hu> on 2013-05-17

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

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@150245 268f45cc-cd09-0410-ab3c-d52691b4dbfc