add teh rounded corners property back

This has been removed because it was unused.

Change-Id: If8fdf87cec1cd5fb5ee1924396643b152e6f3431

chart2/source/view/inc/3DChartObjects.hxx

@@ -35,7 +35,10 @@ class Bar : public Renderable3DObject
 {
 public:
     Bar( const glm::mat4& rPosition, sal_uInt32 nId );
+
+    virtual void render() SAL_OVERRIDE;
 private:
+    bool mbRoundedCorners;
     glm::mat4 maPos;
     Color maColor; // RGBA fill color
 };

chart2/source/view/main/3DChartObjects.cxx

@@ -29,6 +29,11 @@ Bar::Bar(const glm::mat4& rPosition, sal_uInt32 nId):
 {
 }
 
+void Bar::render()
+{
+    (void) mbRoundedCorners;
+}
+
 Line::Line(sal_uInt32 nId):
     Renderable3DObject(nId)
 {