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

bench/RegionBench.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 "SkBenchmark.h"
 #include "SkRandom.h"
 #include "SkRegion.h"
@@ skipping 64 matching lines @@
     Proc     fProc;
     SkString fName;
     int      fLoopMul;
 
     enum {
         W = 1024,
         H = 768,
         N = SkBENCHLOOP(2000)
     };
 
-    SkIRect randrect(SkMWCRandom& rand) {
+    SkIRect randrect(SkRandom& rand) {
         int x = rand.nextU() % W;
         int y = rand.nextU() % H;
         int w = rand.nextU() % W;
         int h = rand.nextU() % H;
         return SkIRect::MakeXYWH(x, y, w >> 1, h >> 1);
     }
 
     RegionBench(void* param, int count, Proc proc, const char name[], int mul = 1) : INHERITED(param) {
         fProc = proc;
         fName.printf("region_%s_%d", name, count);
         fLoopMul = mul;
 
-        SkMWCRandom rand;
+        SkRandom rand;
         for (int i = 0; i < count; i++) {
             fA.op(randrect(rand), SkRegion::kXOR_Op);
             fB.op(randrect(rand), SkRegion::kXOR_Op);
         }
         fIsRendering = false;
     }
 
 protected:
     virtual const char* onGetName() { return fName.c_str(); }
 
@@ skipping 23 matching lines @@
 
 static BenchRegistry gR0(gF0);
 static BenchRegistry gR1(gF1);
 static BenchRegistry gR2(gF2);
 static BenchRegistry gR3(gF3);
 static BenchRegistry gR4(gF4);
 static BenchRegistry gR5(gF5);
 static BenchRegistry gR6(gF6);
 static BenchRegistry gR7(gF7);
 static BenchRegistry gR8(gF8);