Revert of Finish conversion to sk_sp<SkShader>

bench/RectBench.cpp

Index: bench/RectBench.cpp
diff --git a/bench/RectBench.cpp b/bench/RectBench.cpp
index 5bd5640eea9ab5dfa99e4c6371967110063267d3..a700b369e4999397b6bd2f40d75b56718d20a766 100644
--- a/bench/RectBench.cpp
+++ b/bench/RectBench.cpp
@@ -238,8 +238,10 @@
             srcBM.allocN32Pixels(10, 1);
             srcBM.eraseColor(0xFF00FF00);
 
-            paint.setShader(SkShader::MakeBitmapShader(srcBM, SkShader::kClamp_TileMode,
-                                                       SkShader::kClamp_TileMode));
+            SkShader* s;
+            s  = SkShader::CreateBitmapShader(srcBM, SkShader::kClamp_TileMode,
+                                              SkShader::kClamp_TileMode);
+            paint.setShader(s)->unref();
         }
         for (int loop = 0; loop < loops; loop++) {
             for (size_t i = 0; i < sizes; i++) {