Start using GrGpuCommandBuffer in GrDrawTarget.

src/gpu/batches/GrBatch.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 GrBatch_DEFINED
 #define GrBatch_DEFINED
 
 #include "../private/SkAtomics.h"
 #include "GrNonAtomicRef.h"
 #include "SkRect.h"
 #include "SkString.h"
 
 #include <new>
 
 class GrCaps;
+class GrGpuCommandBuffer;
 class GrBatchFlushState;
 class GrRenderTarget;
 
 /**
  * GrBatch is the base class for all Ganesh deferred geometry generators.  To facilitate
  * reorderable batching, Ganesh does not generate geometry inline with draw calls.  Instead, it
  * captures the arguments to the draw and then generates the geometry on demand.  This gives GrBatch
  * subclasses complete freedom to decide how / what they can batch.
  *
  * Batches are created when GrContext processes a draw call. Batches of the same  subclass may be
@@ skipping 129 matching lines @@
 
     SkDEBUGCODE(bool                    fUsed;)
     const uint32_t                      fClassID;
     static uint32_t GenBatchID() { return GenID(&gCurrBatchUniqueID); }
     mutable uint32_t                    fUniqueID;
     static int32_t                      gCurrBatchUniqueID;
     static int32_t                      gCurrBatchClassID;
 };
 
 #endif