Valgrind: Use BaseTreeView instead of QTreeView

Change-Id: Ica796ba3d45b97fb5ed0856acb0860f15d45be56
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/valgrind/callgrindcostview.h

@@ -32,12 +32,12 @@
 
 #include "callgrindcostdelegate.h"
 
-#include <QTreeView>
+#include <utils/basetreeview.h>
 
 namespace Valgrind {
 namespace Internal {
 
-class CostView : public QTreeView
+class CostView : public Utils::BaseTreeView
 {
     Q_OBJECT
 
@@ -57,6 +57,8 @@ public:
     void setCostFormat(CostDelegate::CostFormat format);
     CostDelegate::CostFormat costFormat() const;
 
+    void contextMenuEvent(QContextMenuEvent *ev);
+
 private:
     class Private;
     Private *d;