SkNonCopyable should be used with private inheritance.

include/core/SkImageDecoder.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkImageDecoder_DEFINED
 #define SkImageDecoder_DEFINED
 
 #include "SkBitmap.h"
 #include "SkImage.h"
 #include "SkRect.h"
 #include "SkRefCnt.h"
 #include "SkTRegistry.h"
 #include "SkTypes.h"
 
 class SkStream;
 class SkStreamRewindable;
 
 /** \class SkImageDecoder
 
     Base class for decoding compressed images into a SkBitmap
 */
-class SkImageDecoder : public SkNoncopyable {
+class SkImageDecoder : SkNoncopyable {
 public:
     virtual ~SkImageDecoder();
 
     enum Format {
         kUnknown_Format,
         kBMP_Format,
         kGIF_Format,
         kICO_Format,
         kJPEG_Format,
         kPNG_Format,
@@ skipping 493 matching lines @@
 DECLARE_DECODER_CREATOR(WBMPImageDecoder);
 DECLARE_DECODER_CREATOR(WEBPImageDecoder);
 
 
 // Typedefs to make registering decoder and formatter callbacks easier.
 // These have to be defined outside SkImageDecoder. :(
 typedef SkTRegistry<SkImageDecoder*(*)(SkStreamRewindable*)>        SkImageDecoder_DecodeReg;
 typedef SkTRegistry<SkImageDecoder::Format(*)(SkStreamRewindable*)> SkImageDecoder_FormatReg;
 
 #endif