SkNonCopyable should be used with private inheritance.

src/gpu/GrSWMaskHelper.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrSWMaskHelper_DEFINED
 #define GrSWMaskHelper_DEFINED
 
@@ skipping 20 matching lines @@
  *   GrSWMaskHelper helper(context);
  *   helper.init(...);
  *
  *      draw one or more paths/rects specifying the required boolean ops
  *
  *   toTexture();   // to get it from the internal bitmap to the GPU
  *
  * The result of this process will be the final mask (on the GPU) in the
  * upper left hand corner of the texture.
  */
-class GrSWMaskHelper : public SkNoncopyable {
+class GrSWMaskHelper : SkNoncopyable {
 public:
     GrSWMaskHelper(GrContext* context)
     : fContext(context) {
     }
 
     // set up the internal state in preparation for draws. Since many masks
     // may be accumulated in the helper during creation, "resultBounds"
     // allows the caller to specify the region of interest - to limit the
     // amount of work.
     bool init(const SkIRect& resultBounds, const SkMatrix* matrix);
@@ skipping 46 matching lines @@
     GrContext*      fContext;
     SkMatrix        fMatrix;
     SkBitmap        fBM;
     SkDraw          fDraw;
     SkRasterClip    fRasterClip;
 
     typedef SkNoncopyable INHERITED;
 };
 
 #endif // GrSWMaskHelper_DEFINED