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

tests/BitmapGetColorTest.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 "Test.h"
 #include "SkBitmap.h"
 #include "SkRect.h"
 #include "SkRandom.h"
 
-static int nextRand(SkMWCRandom& rand, int min, int max) {
+static int nextRand(SkRandom& rand, int min, int max) {
     return min + (int)rand.nextRangeU(0, max - min);
 }
 
-static void rand_irect(SkIRect* rect, int W, int H, SkMWCRandom& rand) {
+static void rand_irect(SkIRect* rect, int W, int H, SkRandom& rand) {
     const int DX = W / 2;
     const int DY = H / 2;
 
     rect->fLeft   = nextRand(rand, -DX, W + DX);
     rect->fTop    = nextRand(rand, -DY, H + DY);
     rect->fRight  = nextRand(rand, -DX, W + DX);
     rect->fBottom = nextRand(rand, -DY, H + DY);
     rect->sort();
 }
 
@@ skipping 22 matching lines @@
     const int W = 43;
     const int H = 13;
 
     SkBitmap bm1, bm8;
 
     bm1.setConfig(SkBitmap::kA1_Config, W, H);
     bm1.allocPixels();
     bm8.setConfig(SkBitmap::kA8_Config, W, H);
     bm8.allocPixels();
 
-    SkMWCRandom rand;
+    SkRandom rand;
     for (int i = 0; i < 10000; ++i) {
         SkIRect area;
         rand_irect(&area, W, H, rand);
 
         bm1.eraseColor(0);
         bm8.eraseColor(0);
 
         bm1.eraseArea(area, SK_ColorWHITE);
         bm8.eraseArea(area, SK_ColorWHITE);
         test_equal_A1_A8(reporter, bm1, bm8);
@@ skipping 33 matching lines @@
 
         SkColor c = bm.getColor(1, 1);
         REPORTER_ASSERT(reporter, c == gRec[i].fOutColor);
     }
 
     test_eraserect_A1(reporter);
 }
 
 #include "TestClassDef.h"
 DEFINE_TESTCLASS("GetColor", TestGetColorClass, TestGetColor)