Remove unused TableViewRowBackgroundPainter class.

ui/views/controls/table/table_view.h

Index: ui/views/controls/table/table_view.h
diff --git a/ui/views/controls/table/table_view.h b/ui/views/controls/table/table_view.h
index 6d1c1846532066e34580c99dc46b76c5fc09937a..3f62914f628bc1071a02a1d626f321cd67b3bd27 100644
--- a/ui/views/controls/table/table_view.h
+++ b/ui/views/controls/table/table_view.h
@@ -37,7 +37,6 @@ struct GroupRange;
 class TableGrouper;
 class TableHeader;
 class TableViewObserver;
-class TableViewRowBackgroundPainter;
 class TableViewTestHelper;
 
 // The cells in the first column of a table can contain:
@@ -106,9 +105,6 @@ class VIEWS_EXPORT TableView
   // Returns a new ScrollView that contains the receiver.
   View* CreateParentIfNecessary();
 
-  void SetRowBackgroundPainter(
-      std::unique_ptr<TableViewRowBackgroundPainter> painter);
-
   // Sets the TableGrouper. TableView does not own |grouper| (common use case is
   // to have TableModel implement TableGrouper).
   void SetGrouper(TableGrouper* grouper);
@@ -347,8 +343,6 @@ class VIEWS_EXPORT TableView
   std::vector<int> view_to_model_;
   std::vector<int> model_to_view_;
 
-  std::unique_ptr<TableViewRowBackgroundPainter> row_background_painter_;
-
   TableGrouper* grouper_;
 
   // True if in SetVisibleColumnWidth().