Add support to dump font cache texture for debug purposes

src/gpu/GrTextStrike.h

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 
@@ skipping 80 matching lines @@
         return fCache.getArray()[index];
     }
     GrTextStrike* getHeadStrike() const { return fHead; }
 
 #ifdef SK_DEBUG
     void validate() const;
 #else
     void validate() const {}
 #endif
 
+    void dump() const;
+
 private:
     friend class GrFontPurgeListener;
 
     class Key;
     GrTHashTable<GrTextStrike, Key, 8> fCache;
     // for LRU
     GrTextStrike* fHead;
     GrTextStrike* fTail;
 
     GrGpu*      fGpu;
     GrAtlasMgr* fAtlasMgr[kMaskFormatCount];
 
     GrTextStrike* generateStrike(GrFontScaler*, const Key&);
     inline void detachStrikeFromList(GrTextStrike*);
 };
 
 #endif