Moved the activity indicator mute code to parent class

include/InstrumentTrack.h

@@ -333,7 +333,6 @@ private slots:
 	void midiInSelected();
 	void midiOutSelected();
 	void midiConfigChanged();
-	void muteChanged();
 
 	void assignFxLine( int channelIndex );
 	void createFxLine();
@@ -357,6 +356,10 @@ private:
 
 	QPoint m_lastPos;
 
+	FadeButton * getActivityIndicator()
+	{
+		return m_activityIndicator;
+	}
 
 	friend class InstrumentTrackWindow;
 

include/Track.h

@@ -39,6 +39,7 @@
 #include "AutomatableModel.h"
 #include "ModelView.h"
 #include "DataFile.h"
+#include "FadeButton.h"
 
 
 class QMenu;
@@ -737,12 +738,17 @@ private:
 
 	Actions m_action;
 
+	virtual FadeButton * getActivityIndicator()
+	{
+		return NULL;
+	}
 
 	friend class TrackLabelButton;
 
 
 private slots:
 	void createTCOView( TrackContentObject * tco );
+	void muteChanged ();
 
 } ;