debugger: use saved "resize columns to contents" settings

Change-Id: I88d50205d6ba626e0b4bf66879271fafab81e8cb
Reviewed-by: con
Task-number: QTCREATORBUG-5320
Reviewed-on: http://codereview.qt.nokia.com/1379
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

src/plugins/debugger/snapshotwindow.h

@@ -59,6 +59,7 @@ private:
     void removeSnapshot(int i);
     void keyPressEvent(QKeyEvent *ev);
     void contextMenuEvent(QContextMenuEvent *ev);
+    void setModel(QAbstractItemModel *model);
 
     SnapshotHandler *m_snapshotHandler;
 };