use Make instead of Create to return a shared shader

src/effects/SkTileImageFilter.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTileImageFilter.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
@@ skipping 78 matching lines @@
     SkASSERT(subset.width() == srcIRect.width());
     SkASSERT(subset.height() == srcIRect.height());
 
     SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(w, h));
     if (nullptr == device.get()) {
         return false;
     }
     SkCanvas canvas(device);
     SkPaint paint;
     paint.setXfermodeMode(SkXfermode::kSrc_Mode);
-
-    SkAutoTUnref<SkShader> shader(SkShader::CreateBitmapShader(subset,
-                                  SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode));
-    paint.setShader(shader);
+    paint.setShader(SkShader::MakeBitmapShader(subset, SkShader::kRepeat_TileMode,
+                                               SkShader::kRepeat_TileMode));
     canvas.translate(-dstRect.fLeft, -dstRect.fTop);
     canvas.drawRect(dstRect, paint);
     *dst = device->accessBitmap(false);
     offset->fX = dstIRect.fLeft;
     offset->fY = dstIRect.fTop;
     return true;
 }
 
 void SkTileImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
                                           SkIRect* dst, MapDirection direction) const {
@@ skipping 35 matching lines @@
     str->appendf(" dst: %.2f %.2f %.2f %.2f",
                  fDstRect.fLeft, fDstRect.fTop, fDstRect.fRight, fDstRect.fBottom);
     if (this->getInput(0)) {
         str->appendf("input: (");
         this->getInput(0)->toString(str);
         str->appendf(")");
     }
     str->append(")");
 }
 #endif