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

bench/VertBench.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 "SkCanvas.h"
 #include "SkPaint.h"
@@ skipping 50 matching lines @@
                         SkASSERT(idx[i] < PTS);
                     }
                     idx += 6;
                 }
             }
             yy += dy;
         }
         SkASSERT(PTS == pts - fPts);
         SkASSERT(IDX == idx - fIdx);
 
-        SkMWCRandom rand;
+        SkRandom rand;
         for (int i = 0; i < PTS; ++i) {
             fColors[i] = rand.nextU() | (0xFF << 24);
         }
 
         fName.set("verts");
     }
 
 protected:
     virtual const char* onGetName() { return fName.c_str(); }
     virtual void onDraw(SkCanvas* canvas) {
         SkPaint paint;
         this->setupPaint(&paint);
 
         for (int i = 0; i < N; i++) {
             canvas->drawVertices(SkCanvas::kTriangles_VertexMode, PTS,
                                  fPts, NULL, fColors, NULL, fIdx, IDX, paint);
         }
     }
 private:
     typedef SkBenchmark INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static SkBenchmark* Fact(void* p) { return SkNEW_ARGS(VertBench, (p)); }
 
 static BenchRegistry gReg(Fact);