remove fClipStack and attach/deattach-from-canvas

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 134 matching lines @@
     // just for subclasses, to assign a custom pixelref
     SkPixelRef* setPixelRef(SkPixelRef* pr) {
         fBitmap.setPixelRef(pr);
         return pr;
     }
 
     bool onReadPixels(const SkImageInfo&, void*, size_t, int x, int y) override;
     bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) override;
     bool onPeekPixels(SkPixmap*) override;
     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 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;
 
     sk_sp<SkSurface> makeSurface(const SkImageInfo&, const SkSurfaceProps&) override;
 
     SkImageFilterCache* getImageFilterCache() override;
 
     SkBitmap    fBitmap;
 
     void setNewSize(const SkISize&);  // Used by SkCanvas for resetForNextPicture().
 
     typedef SkBaseDevice INHERITED;
 };
 
 #endif // SkBitmapDevice_DEFINED