Some simple optimizations for improving GrAtlasTextContext perf

src/gpu/GrBatchFontCache.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 GrBatchFontCache_DEFINED
 #define GrBatchFontCache_DEFINED
 
@@ skipping 22 matching lines @@
     GrBatchFontCache* getBatchFontCache() const { return fBatchFontCache; }
 
     inline GrGlyph* getGlyph(GrGlyph::PackedID packed, GrFontScaler* scaler) {
         GrGlyph* glyph = fCache.find(packed);
         if (NULL == glyph) {
             glyph = this->generateGlyph(packed, scaler);
         }
         return glyph;
     }
 
-    // returns true if glyph (or glyph+padding for distance field)
-    // is too large to ever fit in texture atlas subregions (GrPlots)
-    bool glyphTooLargeForAtlas(GrGlyph*);
     // returns true if glyph successfully added to texture atlas, false otherwise
     bool addGlyphToAtlas(GrBatchTarget*, GrGlyph*, GrFontScaler*);
 
     // testing
     int countGlyphs() const { return fCache.count(); }
 
     // remove any references to this plot
     void removeID(GrBatchAtlas::AtlasID);
 
     // If a TextStrike is abandoned by the cache, then the caller must get a new strike
@@ skipping 129 matching lines @@
 
     static void HandleEviction(GrBatchAtlas::AtlasID, void*);
 
     GrContext* fContext;
     SkTDynamicHash<GrBatchTextStrike, GrFontDescKey> fCache;
     GrBatchAtlas* fAtlases[kMaskFormatCount];
     GrBatchTextStrike* fPreserveStrike;
 };
 
 #endif