Factor out GrAtlasTextBatch fromt GrAtlasTextContext

src/gpu/GrAtlasTextContext.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 GrAtlasTextContext_DEFINED
 #define GrAtlasTextContext_DEFINED
 
 #include "GrTextContext.h"
 
 #include "GrAtlasTextBlob.h"
 #include "GrGeometryProcessor.h"
 #include "SkTextBlobRunIterator.h"
 
 #ifdef GR_TEST_UTILS
 #include "GrBatchTest.h"
 #endif
 
 class GrDrawBatch;
 class GrDrawContext;
 class GrDrawTarget;
 class GrPipelineBuilder;
 class GrTextBlobCache;
 class SkGlyph;
 
 /*
  * This class implements GrTextContext using standard bitmap fonts, and can also process textblobs.
- * TODO replace GrBitmapTextContext
  */
 class GrAtlasTextContext : public GrTextContext {
 public:
     static GrAtlasTextContext* Create(GrContext*, const SkSurfaceProps&);
 
 private:
     GrAtlasTextContext(GrContext*, const SkSurfaceProps&);
     ~GrAtlasTextContext() override {}
 
     bool canDraw(const GrRenderTarget*, const GrClip&, const GrPaint&,
@@ skipping 136 matching lines @@
         void buildDistanceAdjustTable();
 
         SkScalar* fTable;
     };
 
     GrBatchTextStrike* fCurrStrike;
     GrTextBlobCache* fCache;
     SkAutoTUnref<const DistanceAdjustTable> fDistanceAdjustTable;
 
     friend class GrTextBlobCache;
-    friend class TextBatch;
+    friend class GrAtlasTextBatch;
 
 #ifdef GR_TEST_UTILS
     DRAW_BATCH_TEST_FRIEND(TextBlobBatch);
 #endif
 
     typedef GrTextContext INHERITED;
 };
 
 #endif