switch xfermodes over to sk_sp

src/gpu/GrSWMaskHelper.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrSWMaskHelper.h"
 
 #include "GrCaps.h"
@@ skipping 87 matching lines @@
 
 }
 
 /**
  * Draw a single rect element of the clip stack into the accumulation bitmap
  */
 void GrSWMaskHelper::draw(const SkRect& rect, SkRegion::Op op,
                           bool antiAlias, uint8_t alpha) {
     SkPaint paint;
 
-    SkXfermode* mode = SkXfermode::Create(op_to_mode(op));
-
     SkASSERT(kNone_CompressionMode == fCompressionMode);
 
-    paint.setXfermode(mode);
+    paint.setXfermode(SkXfermode::Make(op_to_mode(op)));
     paint.setAntiAlias(antiAlias);
     paint.setColor(SkColorSetARGB(alpha, alpha, alpha, alpha));
 
     fDraw.drawRect(rect, paint);
-
-    SkSafeUnref(mode);
 }
 
 /**
  * Draw a single path element of the clip stack into the accumulation bitmap
  */
 void GrSWMaskHelper::draw(const SkPath& path, const SkStrokeRec& stroke, SkRegion::Op op,
                           bool antiAlias, uint8_t alpha) {
 
     SkPaint paint;
     if (stroke.isHairlineStyle()) {
@@ skipping 232 matching lines @@
     pipelineBuilder->addCoverageFragmentProcessor(
                          GrSimpleTextureEffect::Create(texture,
                                                        maskMatrix,
                                                        GrTextureParams::kNone_FilterMode,
                                                        kDevice_GrCoordSet))->unref();
 
     SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, SkMatrix::I(),
                                                                         dstRect, nullptr, &invert));
     target->drawBatch(*pipelineBuilder, batch);
 }