QmlProfiler: Get rid of field/column mapping in statistics view

None of the fields are ever unavailable, and they are always shown in
the same order, so we can just use the enums directly instead of a
mapping and an extra whitelist. This enables us to also drop some magic
numbers. In addition, none of the items have children. So we don't need
to expand or collapse them.

Change-Id: Ibf3d1933d1fb703f5d8e74ae5043c3d1db462738
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/qmlprofiler/qmlprofilerstatisticsview.h

@@ -49,25 +49,29 @@ enum ItemRole {
     ColumnRole
 };
 
-enum Fields {
-    Name,
-    Callee,
-    CalleeDescription,
-    Caller,
-    CallerDescription,
-    CallCount,
-    Details,
-    Location,
-    MaxTime,
-    TimePerCall,
-    SelfTime,
-    SelfTimeInPercent,
-    MinTime,
-    TimeInPercent,
-    TotalTime,
-    Type,
-    MedianTime,
-    MaxFields
+enum MainField {
+    MainLocation,
+    MainType,
+    MainTimeInPercent,
+    MainTotalTime,
+    MainSelfTimeInPercent,
+    MainSelfTime,
+    MainCallCount,
+    MainTimePerCall,
+    MainMedianTime,
+    MainMaxTime,
+    MainMinTime,
+    MainDetails,
+    MaxMainField
+};
+
+enum RelativeField {
+    RelativeLocation,
+    RelativeType,
+    RelativeTotalTime,
+    RelativeCallCount,
+    RelativeDetails,
+    MaxRelativeField
 };
 
 class QmlProfilerStatisticsView : public QmlProfilerEventsView
@@ -107,8 +111,6 @@ public:
     explicit QmlProfilerStatisticsMainView(QWidget *parent, QmlProfilerStatisticsModel *model);
     ~QmlProfilerStatisticsMainView();
 
-    void setFieldViewable(Fields field, bool show);
-
     QModelIndex selectedModelIndex() const;
     void copyTableToClipboard() const;
     void copyRowToClipboard() const;