Make GrAtlasTextBlob non-virtual

src/gpu/GrAtlasTextBlob.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrAtlasTextBlob_DEFINED
 #define GrAtlasTextBlob_DEFINED
 
@@ skipping 17 matching lines @@
  * consists of a number of runs.  Runs inside a blob are flushed individually so they can be
  * reordered.
  *
  * The only thing(aside from a memcopy) required to flush a GrAtlasTextBlob is to ensure that
  * the GrAtlas will not evict anything the Blob needs.
  *
  * Note: This struct should really be named GrCachedAtasTextBlob, but that is too verbose.
  *
  * *WARNING* If you add new fields to this struct, then you may need to to update AssertEqual
  */
-struct GrAtlasTextBlob : public SkRefCnt {
+struct GrAtlasTextBlob : public SkNVRefCnt<GrAtlasTextBlob> {
     SK_DECLARE_INTERNAL_LLIST_INTERFACE(GrAtlasTextBlob);
 
     /*
      * Each Run inside of the blob can have its texture coordinates regenerated if required.
      * To determine if regeneration is necessary, fAtlasGeneration is used.  If there have been
      * any evictions inside of the atlas, then we will simply regenerate Runs.  We could track
      * this at a more fine grained level, but its not clear if this is worth it, as evictions
      * should be fairly rare.
      *
      * One additional point, each run can contain glyphs with any of the three mask formats.
@@ skipping 182 matching lines @@
     SkScalar fMaxMinScale;
     SkScalar fMinMaxScale;
     int fRunCount;
     uint8_t fTextType;
 
     GrAtlasTextBlob()
         : fMaxMinScale(-SK_ScalarMax)
         , fMinMaxScale(SK_ScalarMax)
         , fTextType(0) {}
 
-    ~GrAtlasTextBlob() override {
+    ~GrAtlasTextBlob() {
         for (int i = 0; i < fRunCount; i++) {
             fRuns[i].~Run();
         }
     }
 
     static const Key& GetKey(const GrAtlasTextBlob& blob) {
         return blob.fKey;
     }
 
     static uint32_t Hash(const Key& key) {
@@ skipping 36 matching lines @@
 
     static const int kVerticesPerGlyph = 4;
 
 #ifdef CACHE_SANITY_CHECK
     static void AssertEqual(const GrAtlasTextBlob&, const GrAtlasTextBlob&);
     size_t fSize;
 #endif
 };
 
 #endif