Iterate over instanced draws in GrGpu rather than above GrBatchTarget

src/gpu/GrRectBatch.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrRectBatch.h"
 
 #include "GrBatch.h"
@@ skipping 138 matching lines @@
             }
 
             static const int kColorOffset = sizeof(SkPoint);
             GrColor* vertColor = GrTCast<GrColor*>(offset + kColorOffset);
             for (int j = 0; j < 4; ++j) {
                 *vertColor = geom.fColor;
                 vertColor = (GrColor*) ((intptr_t) vertColor + vertexStride);
             }
         }
 
-        helper.issueDraws(batchTarget);
+        helper.issueDraw(batchTarget);
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }
 
 private:
     RectBatch(const Geometry& geometry) {
         this->initClassID<RectBatch>();
         fGeoData.push_back(geometry);
 
         fBounds = geometry.fRect;
@@ skipping 72 matching lines @@
         geometry.fHasLocalMatrix = true;
         geometry.fLocalMatrix = *localMatrix;
     } else {
         geometry.fHasLocalMatrix = false;
     }
 
     return RectBatch::Create(geometry);
 }
 
 };