Use SkNVRefCnt for a couple common types.

include/core/SkPathRef.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 SkPathRef_DEFINED
 #define SkPathRef_DEFINED
@@ skipping 18 matching lines @@
  * constructor a SkAutoTUnref, which may be updated to point to a new SkPathRef after the editor's
  * constructor returns.
  *
  * The points and verbs are stored in a single allocation. The points are at the begining of the
  * allocation while the verbs are stored at end of the allocation, in reverse order. Thus the points
  * and verbs both grow into the middle of the allocation until the meet. To access verb i in the
  * verb array use ref.verbs()[~i] (because verbs() returns a pointer just beyond the first
  * logical verb or the last verb in memory).
  */
 
-class SK_API SkPathRef : public ::SkRefCnt {
+class SK_API SkPathRef : public SkNVRefCnt<SkPathRef> {
 public:
     class Editor {
     public:
         Editor(SkAutoTUnref<SkPathRef>* pathRef,
                int incReserveVerbs = 0,
                int incReservePoints = 0);
 
         ~Editor() { SkDEBUGCODE(sk_atomic_dec(&fPathRef->fEditorsAttached);) }
 
         /**
@@ skipping 186 matching lines @@
 
     static SkPathRef* CreateFromBuffer(SkRBuffer* buffer);
 
     /**
      * Rollsback a path ref to zero verbs and points with the assumption that the path ref will be
      * repopulated with approximately the same number of verbs and points. A new path ref is created
      * only if necessary.
      */
     static void Rewind(SkAutoTUnref<SkPathRef>* pathRef);
 
-    virtual ~SkPathRef();
+    ~SkPathRef();
     int countPoints() const { SkDEBUGCODE(this->validate();) return fPointCnt; }
     int countVerbs() const { SkDEBUGCODE(this->validate();) return fVerbCnt; }
     int countWeights() const { SkDEBUGCODE(this->validate();) return fConicWeights.count(); }
 
     /**
      * Returns a pointer one beyond the first logical verb (last verb in memory order).
      */
     const uint8_t* verbs() const { SkDEBUGCODE(this->validate();) return fVerbs; }
 
     /**
@@ skipping 279 matching lines @@
     SkBool8  fIsOval;
     SkBool8  fIsRRect;
     // Both the circle and rrect special cases have a notion of direction and starting point
     // The next two variables store that information for either.
     SkBool8  fRRectOrOvalIsCCW;
     uint8_t  fRRectOrOvalStartIdx;
     uint8_t  fSegmentMask;
 
     friend class PathRefTest_Private;
     friend class ForceIsRRect_Private; // unit test isRRect
-    typedef SkRefCnt INHERITED;
 };
 
 #endif