Add auto purging for SkPicture-related Ganesh resources (esp. layers)

include/gpu/SkGpuDevice.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
@@ skipping 125 matching lines @@
     class SkAutoCachedTexture; // used internally
 
 
 protected:
     virtual bool onReadPixels(const SkImageInfo&, void*, size_t, int, int) SK_OVERRIDE;
     virtual bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) SK_OVERRIDE;
 
     /**  PRIVATE / EXPERIMENTAL -- do not call */
     virtual void EXPERIMENTAL_optimize(const SkPicture* picture) SK_OVERRIDE;
     /**  PRIVATE / EXPERIMENTAL -- do not call */
-    virtual void EXPERIMENTAL_purge(const SkPicture* picture) SK_OVERRIDE;
-    /**  PRIVATE / EXPERIMENTAL -- do not call */
     virtual bool EXPERIMENTAL_drawPicture(SkCanvas* canvas, const SkPicture* picture) SK_OVERRIDE;
 
 private:
     GrContext*      fContext;
 
     GrSkDrawProcs*  fDrawProcs;
 
     GrClipData      fClipData;
 
     GrTextContext*  fMainTextContext;
@@ skipping 56 matching lines @@
                          bool bicubic);
 
     bool drawDashLine(const SkPoint pts[2], const SkPaint& paint);
 
     static SkPicture::AccelData::Key ComputeAccelDataKey();
 
     typedef SkBaseDevice INHERITED;
 };
 
 #endif