SkNonCopyable should be used with private inheritance.

src/gpu/GrPlotMgr.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.
  */
 
 #ifndef GrPlotMgr_DEFINED
 #define GrPlotMgr_DEFINED
 
 #include "GrTypes.h"
 #include "GrPoint.h"
 #include "SkTypes.h"
 
-class GrPlotMgr : public SkNoncopyable {
+class GrPlotMgr : SkNoncopyable {
 public:
     GrPlotMgr(int width, int height) {
         fDim.set(width, height);
         size_t needed = width * height;
         if (needed <= sizeof(fStorage)) {
             fBusy = fStorage;
         } else {
             fBusy = SkNEW_ARRAY(char, needed);
         }
         this->reset();
@@ skipping 39 matching lines @@
 private:
     enum {
         STORAGE = 64
     };
     char fStorage[STORAGE];
     char* fBusy;
     GrIPoint16  fDim;
 };
 
 #endif