Change old PRG to be SkLCGRandom; change new one to SkRandom

bench/RectoriBench.cpp

Index: bench/RectoriBench.cpp
diff --git a/bench/RectoriBench.cpp b/bench/RectoriBench.cpp
index 1aa981420733bc4ead2df2501c54649c61436d57..bb887971c12bf06d72723b6546fc06d12067e31c 100644
--- a/bench/RectoriBench.cpp
+++ b/bench/RectoriBench.cpp
@@ -25,7 +25,7 @@ protected:
     }
 
     virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
-        SkMWCRandom Random;
+        SkRandom Random;
 
         for (int i = 0; i < N; i++) {
             SkScalar blurSigma = Random.nextRangeScalar(1.5f, 25.0f);