[GTK] Use GMainLoopSource in WebKitTestRunner
https://bugs.webkit.org/show_bug.cgi?id=138831

Reviewed by Sergio Villar Senin.

* WebKitTestRunner/InjectedBundle/TestRunner.h:
* WebKitTestRunner/InjectedBundle/gtk/TestRunnerGtk.cpp:
(WTR::TestRunner::platformInitialize):
(WTR::TestRunner::invalidateWaitToDumpWatchdogTimer):
(WTR::TestRunner::initializeWaitToDumpWatchdogTimerIfNeeded):
(WTR::waitToDumpWatchdogTimerCallback): Deleted.
* WebKitTestRunner/gtk/TestControllerGtk.cpp:
(WTR::TestController::notifyDone):
(WTR::TestController::platformRunUntil):
(WTR::cancelTimeout): Deleted.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@176566 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Unreviewed, rolling out r176564.
https://bugs.webkit.org/show_bug.cgi?id=139093

massive failures on release test bot (Requested by philn on
#webkit).

Reverted changeset:

"[GStreamer] Bump internal jhbuild versions to 1.4.4"
https://bugs.webkit.org/show_bug.cgi?id=138866
http://trac.webkit.org/changeset/176564

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@176567 268f45cc-cd09-0410-ab3c-d52691b4dbfc