QmlProfiler: Don't process all events twice when loading traces

At the end of QmlProfilerFileReader::load() we have a perfectly valid
set of types and events which we can just pass on to the model as-is.

Change-Id: I6981663f409c4647f4d5ae8a73b5d14cc701017b
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

src/plugins/qmlprofiler/qmlprofilerdatamodel.h

@@ -63,6 +63,8 @@ public:
 
     const QVector<QmlEventData> &getEvents() const;
     const QVector<QmlEventTypeData> &getEventTypes() const;
+    void setData(const QVector<QmlEventTypeData> &types, const QVector<QmlEventData> &events);
+
     int count() const;
     virtual void clear();
     virtual bool isEmpty() const;