TEMPORARY: track stencil clip state in GrRenderTargetOpList

src/gpu/GrRenderTargetOpList.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrRenderTargetOpList_DEFINED
 #define GrRenderTargetOpList_DEFINED
 
@@ skipping 113 matching lines @@
                      const SkIPoint& dstPoint);
 
     gr_instanced::InstancedRendering* instancedRendering() const {
         SkASSERT(fInstancedRendering);
         return fInstancedRendering;
     }
 
     SkDEBUGCODE(void dump() const override;)
 
 private:
-    friend class GrRenderTargetContextPriv; // for clearStencilClip
+    friend class GrRenderTargetContextPriv; // for clearStencilClip and stencil clip state.
 
     // Returns the batch that the input batch was combined with or the input batch if it wasn't
     // combined.
     GrBatch* recordBatch(GrBatch*, const SkRect& clippedBounds);
     void forwardCombine();
 
     // Makes a copy of the dst if it is necessary for the draw. Returns false if a copy is required
     // but couldn't be made. Otherwise, returns true.  This method needs to be protected because it
     // needs to be accessed by GLPrograms to setup a correct drawstate
     bool setupDstReadIfNecessary(const GrPipelineBuilder&,
@@ skipping 17 matching lines @@
     GrGpu*                                          fGpu;
     GrResourceProvider*                             fResourceProvider;
 
     bool                                            fClipBatchToBounds;
     bool                                            fDrawBatchBounds;
     int                                             fMaxBatchLookback;
     int                                             fMaxBatchLookahead;
 
     SkAutoTDelete<gr_instanced::InstancedRendering> fInstancedRendering;
 
+    int32_t                                         fLastClipStackGenID;
+    SkIRect                                         fLastClipStackRect;
+    SkIPoint                                        fLastClipOrigin;
+
     typedef GrOpList INHERITED;
 };
 
 #endif