use Make instead of Create to return a shared shader

samplecode/SampleRepeatTile.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SampleCode.h"
 #include "SkView.h"
 #include "SkCanvas.h"
@@ skipping 19 matching lines @@
         canvas.drawLine(x, 0, x, SkIntToScalar(H - 1), paint);
     }
     paint.setColor(SK_ColorGRAY);
     canvas.drawLine(0, 0, SkIntToScalar(W), 0, paint);
 }
 
 static void make_paint(SkPaint* paint, SkShader::TileMode tm) {
     SkBitmap bm;
     make_bitmap(&bm);
 
-    SkShader* shader = SkShader::CreateBitmapShader(bm, tm, tm);
-    paint->setShader(shader)->unref();
+    paint->setShader(SkShader::MakeBitmapShader(bm, tm, tm));
 }
 
 class RepeatTileView : public SampleView {
 public:
     RepeatTileView() {
         this->setBGColor(SK_ColorGRAY);
     }
 
 protected:
     // overrides from SkEventSink
@@ skipping 30 matching lines @@
     }
 
 private:
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new RepeatTileView; }
 static SkViewRegister reg(MyFactory);