QmlProfiler: Make progress widget more expressive

Instead of the progress bar we can now show the number of events we
have received, and the number of finished finalizers. This should give
a the user a better idea of what is going on.

Change-Id: I324fefbe6d5e3c24b080bfbc103c4317fa585215
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

src/plugins/qmlprofiler/qmlprofilerstatewidget.h

@@ -42,8 +42,9 @@ public:
     ~QmlProfilerStateWidget();
 
 private slots:
-    void showText(const QString &text, bool showProgress = false);
+    void showText(const QString &text);
     void updateDisplay();
+    void update();
     void reposition();
 
 private: