Use sk_sp text blob APIs

src/gpu/text/GrStencilAndCoverTextContext.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 GrStencilAndCoverTextContext_DEFINED
 #define GrStencilAndCoverTextContext_DEFINED
 
@@ skipping 79 matching lines @@
 
         bool isAntiAlias() const { return fFont.isAntiAlias(); }
 
     private:
         typedef GrDrawPathRangeBatch::InstanceData InstanceData;
 
         SkGlyphCache* getGlyphCache() const;
         GrPathRange* createGlyphs(GrContext*) const;
         void appendGlyph(const SkGlyph&, const SkPoint&, FallbackBlobBuilder*);
 
-        GrStyle                          fStyle;
-        SkPaint                          fFont;
-        SkScalar                         fTextRatio;
-        float                            fTextInverseRatio;
-        bool                             fUsingRawGlyphPaths;
-        GrUniqueKey                      fGlyphPathsKey;
-        int                              fTotalGlyphCount;
-        SkAutoTUnref<InstanceData>       fInstanceData;
-        int                              fFallbackGlyphCount;
-        SkAutoTUnref<const SkTextBlob>   fFallbackTextBlob;
-        mutable SkGlyphCache*            fDetachedGlyphCache;
-        mutable uint32_t                 fLastDrawnGlyphsID;
+        GrStyle                    fStyle;
+        SkPaint                    fFont;
+        SkScalar                   fTextRatio;
+        float                      fTextInverseRatio;
+        bool                       fUsingRawGlyphPaths;
+        GrUniqueKey                fGlyphPathsKey;
+        int                        fTotalGlyphCount;
+        SkAutoTUnref<InstanceData> fInstanceData;
+        int                        fFallbackGlyphCount;
+        sk_sp<SkTextBlob>          fFallbackTextBlob;
+        mutable SkGlyphCache*      fDetachedGlyphCache;
+        mutable uint32_t           fLastDrawnGlyphsID;
     };
 
     // Text blobs/caches.
 
     class TextBlob : public SkTLList<TextRun, 1> {
     public:
         typedef SkTArray<uint32_t, true> Key;
 
         static const Key& GetKey(const TextBlob* blob) { return blob->key(); }
 
@@ skipping 29 matching lines @@
     void purgeToFit(const TextBlob&);
 
     GrAtlasTextContext*                                       fFallbackTextContext;
     SkTHashMap<uint32_t, TextBlob*>                           fBlobIdCache;
     SkTHashTable<TextBlob*, const TextBlob::Key&, TextBlob>   fBlobKeyCache;
     SkTInternalLList<TextBlob>                                fLRUList;
     size_t                                                    fCacheSize;
 };
 
 #endif