remove subclassing from ImageFilter::Proxy

include/core/SkBitmapDevice.h

 
 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkBitmapDevice_DEFINED
 #define SkBitmapDevice_DEFINED
@@ skipping 111 matching lines @@
     bool onAccessPixels(SkPixmap*) override;
     void onAttachToCanvas(SkCanvas*) override;
     void onDetachFromCanvas() override;
 
 private:
     friend class SkCanvas;
     friend struct DeviceCM; //for setMatrixClip
     friend class SkDraw;
     friend class SkDrawIter;
     friend class SkDeviceFilteredPaint;
-    friend class SkDeviceImageFilterProxy;
 
     friend class SkSurface_Raster;
 
     // used to change the backend's pixels (and possibly config/rowbytes)
     // but cannot change the width/height, so there should be no change to
     // any clip information.
     void replaceBitmapBackendForRasterSurface(const SkBitmap&) override;
 
     SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*) override;
 
     SkSurface* newSurface(const SkImageInfo&, const SkSurfaceProps&) override;
 
     SkImageFilter::Cache* getImageFilterCache() override;
 
     SkBitmap    fBitmap;
 
     void setNewSize(const SkISize&);  // Used by SkCanvas for resetForNextPicture().
 
     typedef SkBaseDevice INHERITED;
 };
 
 #endif // SkBitmapDevice_DEFINED