vcl: make all members of ImplAnimView private

I'm making Animation a friend class of ImplAnimView. Nothing should be using
ImplAnimView other than Animation - so to enforce this I'm making all member
functions private. This is part of general cleanup of vcl's Animation.

Change-Id: Ib4746d31c14b1b2caeed61cae99c61fca0e02abc

vcl/source/gdi/impanmvw.hxx

@@ -31,6 +31,8 @@ class ImplAnimView
 {
 private:
 
+    friend class Animation;
+
     Animation*      mpParent;
     OutputDevice*   mpOut;
     long            mnExtraData;
@@ -55,8 +57,8 @@ private:
     void            ImplGetPosSize( const AnimationBitmap& rAnm, Point& rPosPix, Size& rSizePix );
     void            ImplDraw( sal_uLong nPos, VirtualDevice* pVDev );
 
-public:
 
+private:
                     ImplAnimView( Animation* pParent, OutputDevice* pOut,
                                   const Point& rPt, const Size& rSz, sal_uLong nExtraData,
                                   OutputDevice* pFirstFrameOutDev = NULL );