small cleanup of GrAtlas

src/gpu/GrImmediateDrawTarget.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 GrImmediateDrawTarget_DEFINED
 #define GrImmediateDrawTarget_DEFINED
 
 #include "GrDrawTarget.h"
 
 #include "GrBatchTarget.h"
 
 /**
  * A debug GrDrawTarget which immediately flushes every command it receives
  */
 class GrImmediateDrawTarget : public GrClipTarget {
 public:
 
     /**
      * Creates a GrImmediateDrawTarget
      *
      * @param context    the context object that owns this draw buffer.
      */
     GrImmediateDrawTarget(GrContext* context);
 
     ~GrImmediateDrawTarget() override;
 
-    // tracking for draws
-    DrawToken getCurrentDrawToken() override { return DrawToken(this, fDrawID); }
-
     void clearStencilClip(const SkIRect& rect,
                           bool insideClip,
                           GrRenderTarget* renderTarget) override;
 
     void discard(GrRenderTarget*) override;
 
 private:
     void onReset() override;
     void onFlush() override;
 
@@ skipping 39 matching lines @@
 
     void recordXferBarrierIfNecessary(const GrPipeline*);
 
     GrBatchTarget fBatchTarget;
     uint32_t fDrawID;
 
     typedef GrClipTarget INHERITED;
 };
 
 #endif