SkNonCopyable should be used with private inheritance.

src/core/SkSmallAllocator.h

 /*
  * Copyright 2014 Google, Inc
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkSmallAllocator_DEFINED
 #define SkSmallAllocator_DEFINED
 
@@ skipping 11 matching lines @@
  *  allocations. kMaxObjects is a hard limit on the number of objects that can
  *  be allocated using this class. After that, attempts to create more objects
  *  with this class will assert and return NULL.
  *  kTotalBytes is the total number of bytes provided for storage for all
  *  objects created by this allocator. If an object to be created is larger
  *  than the storage (minus storage already used), it will be allocated on the
  *  heap. This class's destructor will handle calling the destructor for each
  *  object it allocated and freeing its memory.
  */
 template<uint32_t kMaxObjects, size_t kTotalBytes>
-class SkSmallAllocator : public SkNoncopyable {
+class SkSmallAllocator : SkNoncopyable {
 public:
     SkSmallAllocator()
     : fStorageUsed(0)
     , fNumObjects(0)
     {}
 
     ~SkSmallAllocator() {
         // Destruct in reverse order, in case an earlier object points to a
         // later object.
         while (fNumObjects > 0) {
@@ skipping 97 matching lines @@
 
     // Number of bytes used so far.
     size_t              fStorageUsed;
     // Pad the storage size to be 4-byte aligned.
     uint32_t            fStorage[SkAlign4(kTotalBytes) >> 2];
     uint32_t            fNumObjects;
     Rec                 fRecs[kMaxObjects];
 };
 
 #endif // SkSmallAllocator_DEFINED