Finish conversion to sk_sp<SkShader>

bench/RepeatTileBench.cpp

Index: bench/RepeatTileBench.cpp
diff --git a/bench/RepeatTileBench.cpp b/bench/RepeatTileBench.cpp
index 39830bf90f8a5c290284f08d2e2bd90e6da311ce..452c2c0079f93e91e08bcf1f2f8369eb79da37ae 100644
--- a/bench/RepeatTileBench.cpp
+++ b/bench/RepeatTileBench.cpp
@@ -120,10 +120,9 @@ protected:
             fBitmap = tmp;
         }
 
-        SkShader* s = SkShader::CreateBitmapShader(fBitmap,
-                                                   SkShader::kRepeat_TileMode,
-                                                   SkShader::kRepeat_TileMode);
-        fPaint.setShader(s)->unref();
+        fPaint.setShader(SkShader::MakeBitmapShader(fBitmap,
+                                                    SkShader::kRepeat_TileMode,
+                                                    SkShader::kRepeat_TileMode));
     }