[Qt][WK2] Get rid of the dependency to QtWidgets

[Qt][WK2] Get rid of the dependency to QtWidgets
https://bugs.webkit.org/show_bug.cgi?id=76276

Reviewed by Simon Hausmann.

Source/WebKit2:

* Target.pri:
* UIProcess/API/qt/tests/qmltests/tst_qmltests.cpp:
(main):
* UIProcess/API/qt/tests/qquickwebview/tst_qquickwebview.cpp:
* UIProcess/API/qt/tests/tests.pri:
* UIProcess/API/qt/tests/util.h:

Tools:

* MiniBrowser/qt/MiniBrowser.pro:
* MiniBrowser/qt/MiniBrowserApplication.cpp:
(MiniBrowserApplication::MiniBrowserApplication):
(MiniBrowserApplication::notify):
(MiniBrowserApplication::sendTouchEvent):
* MiniBrowser/qt/MiniBrowserApplication.h:
(MiniBrowserApplication):
* QtTestBrowser/locationedit.h:
* WebKitTestRunner/InjectedBundle/qt/ActivateFontsQt.cpp:
(WTR::activateFonts):
* WebKitTestRunner/qt/PlatformWebViewQt.cpp:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108328 268f45cc-cd09-0410-ab3c-d52691b4dbfc