Debugger: Re-enable thread view sorting

This was disabled as workaround for QTCREATORBUG-7432 but can
be supported again after fefbc172.

Task-number: QTCREATORBUG-7432
Change-Id: Ic85f6f91c0f6f04dc76f66984cb5773b0753ad26
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/debugger/threadshandler.cpp

@@ -36,6 +36,7 @@
 #include <utils/qtcassert.h>
 
 #include <QDebug>
+#include <QSortFilterProxyModel>
 
 namespace Debugger {
 namespace Internal {
@@ -136,8 +137,8 @@ ThreadsHandler::ThreadsHandler()
 {
     m_resetLocationScheduled = false;
     setObjectName(QLatin1String("ThreadsModel"));
-//    m_proxyModel = new QSortFilterProxyModel(this);
-//    m_proxyModel->setSourceModel(this);
+    m_proxyModel = new QSortFilterProxyModel(this);
+    m_proxyModel->setSourceModel(this);
 }
 
 int ThreadsHandler::currentThreadIndex() const
@@ -489,8 +490,7 @@ void ThreadsHandler::resetLocation()
 
 QAbstractItemModel *ThreadsHandler::model()
 {
-    return this;
-    //return m_proxyModel;
+    return m_proxyModel;
 }
 
 } // namespace Internal

src/plugins/debugger/threadshandler.h

@@ -101,8 +101,7 @@ private:
     const QIcon m_emptyIcon;
 
     bool m_resetLocationScheduled;
-
-    //QSortFilterProxyModel *m_proxyModel;
+    QSortFilterProxyModel *m_proxyModel;
 };
 
 } // namespace Internal