https://bugs.webkit.org/show_bug.cgi?id=48985

Reviewed by Andreas Kling.

* Platform/qt/SharedMemoryQt.cpp:
(WebKit::SharedMemory::create): Force deletion of the QSharedMemory
object on terminate by connecting QCoreApplication::aboutToQuit with
deleteLater. Add the object to the CrashHandler as well to release the
shared memory segment even on crash.
(WebKit::SharedMemory::~SharedMemory):
* Shared/qt/CrashHandler.cpp: Added.
CrashHandler has a container for QObjects that we want to
destroy on crash. When we got a signal that we interpret as
a crash then it destroys those objects.
(WebKit::CrashHandler::CrashHandler):
(WebKit::CrashHandler::signalHandler):
(WebKit::CrashHandler::deleteObjects):
* Shared/qt/CrashHandler.h: Added.
(WebKit::CrashHandler::instance):
(WebKit::CrashHandler::didDelete):
(WebKit::CrashHandler::markForDeletionOnCrash):
* UIProcess/Launcher/qt/ProcessLauncherQt.cpp:
(WebKit::ProcessLauncherHelper::ProcessLauncherHelper):
Add the object itself to the CrashHandler to close the QLocalServer
even on crash. Without that the QLocalServer leaves over socket files on the disk.
(WebKit::ProcessLauncherHelper::~ProcessLauncherHelper):
* WebKit2.pro:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@71409 268f45cc-cd09-0410-ab3c-d52691b4dbfc