added support for PLS path rendering

src/gpu/batches/GrAtlasTextBatch.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 "GrAtlasTextBatch.h"
 
 #include "GrBatchFlushState.h"
@@ skipping 243 matching lines @@
             coverage->setUnknownSingleComponent();
             break;
         case kLCDCoverageMask_MaskType:
         case kLCDDistanceField_MaskType:
             coverage->setUnknownOpaqueFourComponents();
             coverage->setUsingLCDCoverage();
             break;
         case kColorBitmapMask_MaskType:
             coverage->setKnownSingleComponent(0xff);
     }
+    overrides->fUsePLSDstRead = false;
 }
 
 void GrAtlasTextBatch::initBatchTracker(const GrXPOverridesForBatch& overrides) {
     // Handle any color overrides
     if (!overrides.readsColor()) {
         fGeoData[0].fColor = GrColor_ILLEGAL;
     }
     overrides.getOverrideColorIfSet(&fGeoData[0].fColor);
 
     // setup batch properties
@@ skipping 277 matching lines @@
         return GrDistanceFieldA8TextGeoProc::Create(color,
                                                     viewMatrix,
                                                     texture,
                                                     params,
                                                     flags,
                                                     this->usesLocalCoords());
 #endif
     }
 
 }