added support for PLS path rendering

src/gpu/batches/GrTestBatch.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 GrTestBatch_DEFINED
 #define GrTestBatch_DEFINED
 
@@ skipping 14 matching lines @@
     };
 
     virtual const char* name() const override = 0;
 
     void computePipelineOptimizations(GrInitInvariantOutput* color, 
                                       GrInitInvariantOutput* coverage,
                                       GrBatchToXPOverrides* overrides) const override {
         // When this is called on a batch, there is only one geometry bundle
         color->setKnownFourComponents(this->geoData(0)->fColor);
         coverage->setUnknownSingleComponent();
-        overrides->fUsePLSDstRead = false;
     }
 
     void initBatchTracker(const GrXPOverridesForBatch& overrides) override {
         // Handle any color overrides
         if (!overrides.readsColor()) {
             this->geoData(0)->fColor = GrColor_ILLEGAL;
         }
         overrides.getOverrideColorIfSet(&this->geoData(0)->fColor);
 
         // setup batch properties
@@ skipping 35 matching lines @@
         bool fCoverageIgnored;
     };
 
     SkAutoTUnref<const GrGeometryProcessor> fGeometryProcessor;
     BatchTracker fBatch;
 
     typedef GrVertexBatch INHERITED;
 };
 
 #endif