Add debug option to clip each GrBatch to its device bounds

src/gpu/GrDrawingManager.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 GrDrawingManager_DEFINED
 #define GrDrawingManager_DEFINED
 
@@ skipping 35 matching lines @@
     GrContext* getContext() { return fContext; }
 
     GrPathRenderer* getPathRenderer(const GrPathRenderer::CanDrawPathArgs& args,
                                     bool allowSW,
                                     GrPathRendererChain::DrawType drawType,
                                     GrPathRenderer::StencilSupport* stencilSupport = NULL);
 
     static bool ProgramUnitTest(GrContext* context, int maxStages);
 
 private:
-    GrDrawingManager(GrContext* context)
+    GrDrawingManager(GrContext* context, const GrDrawTarget::Options& optionsForDrawTargets)
         : fContext(context)
+        , fOptionsForDrawTargets(optionsForDrawTargets)
         , fAbandoned(false)
         , fNVPRTextContext(nullptr)
         , fPathRendererChain(nullptr)
         , fSoftwarePathRenderer(nullptr)
         , fFlushState(context->getGpu(), context->resourceProvider()) {
         sk_bzero(fTextContexts, sizeof(fTextContexts));
     }
 
     void abandon();
     void cleanup();
     void reset();
     void flush();
 
     friend class GrContext;  // for access to: ctor, abandon, reset & flush
 
     static const int kNumPixelGeometries = 5; // The different pixel geometries
     static const int kNumDFTOptions = 2;      // DFT or no DFT
 
     GrContext*                  fContext;
+    GrDrawTarget::Options       fOptionsForDrawTargets;
 
     bool                        fAbandoned;
     SkTDArray<GrDrawTarget*>    fDrawTargets;
 
     GrTextContext*              fNVPRTextContext;
     GrTextContext*              fTextContexts[kNumPixelGeometries][kNumDFTOptions];
 
     GrPathRendererChain*        fPathRendererChain;
     GrSoftwarePathRenderer*     fSoftwarePathRenderer;
 
     GrBatchFlushState           fFlushState;
 };
 
 #endif