Implement instanced rendering for simple shapes

include/gpu/GrDrawContext.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 GrDrawContext_DEFINED
 #define GrDrawContext_DEFINED
 
@@ skipping 290 matching lines @@
     friend class GrDrawContextPriv;
 
     bool drawFilledDRRect(const GrClip& clip,
                           const GrPaint& paint,
                           const SkMatrix& viewMatrix,
                           const SkRRect& origOuter,
                           const SkRRect& origInner);
 
     GrDrawBatch* getFillRectBatch(const GrPaint& paint,
                                   const SkMatrix& viewMatrix,
-                                  const SkRect& rect);
+                                  const SkRect& rect,
+                                  uint32_t extraInstRenderFlags,
+                                  bool* enableHWAA);
 
     void internalDrawPath(const GrClip& clip,
                           const GrPaint& paint,
                           const SkMatrix& viewMatrix,
                           const SkPath& path,
                           const GrStrokeInfo& strokeInfo);
 
     // This entry point allows the GrTextContext-derived classes to add their batches to
     // the drawTarget.
     void drawBatch(GrPipelineBuilder* pipelineBuilder, GrDrawBatch* batch);
 
     GrDrawTarget* getDrawTarget();
 
     GrDrawingManager*                 fDrawingManager;
     GrRenderTarget*                   fRenderTarget;
 
     // In MDB-mode the drawTarget can be closed by some other drawContext that has picked
     // it up. For this reason, the drawTarget should only ever be accessed via 'getDrawTarget'.
     GrDrawTarget*                     fDrawTarget;
     SkAutoTDelete<GrAtlasTextContext> fAtlasTextContext;
     GrContext*                        fContext;
+    uint32_t                          fInstancedRenderingFlags;
 
     SkSurfaceProps                    fSurfaceProps;
     GrAuditTrail*                     fAuditTrail;
 
     // In debug builds we guard against improper thread handling
     SkDEBUGCODE(mutable GrSingleOwner* fSingleOwner;)
 };
 
 #endif